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Attitudes of African males to contraception.Luthuli, H. V. January 1986 (has links)
The attitude of the African male to contraception and
the role he plays in the acceptance of contraceptives
by his racial group is presented.
Over a period of one month the researcher interviewed
220 African males at a primary care private practice.
In this study 186 (85%) were aware of contraceptives
and 34 (15%) had no knowledge of contraception;
111 (60%) were married and 75 (40%) were unmarried.
The 26 - 35 year age group were the most familiar with
contraception (57%). The unemployed were the least
users of contraceptives (8%), whereas 69% of the
professional group were using contraceptives.
The average ideal family size of the group was 4
children.
No significant cultural barriers to contraception were
found. Religion was found to have little effect on
contraceptive practice by the African male.
Fifty-three percent of the Urban dwellers were using
contraceptives compared with only 30% of the Rural
inhabitants.
Modern methods of contraception are not yet sufficiently
known by the African male to be useful to him. Health
workers should educate the African male in matters of
contraception to achieve the desired objectives of
family planning campaigns among this racial group. / Thesis (M.Prax.Med.)-University of Natal, Durban, 1986.
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Health care waste management in public clinics in the iLembe District : situational analysis and intervention strategy.Gabela, Sibusiso Derrick. January 2007 (has links)
INTRODUCTION All waste generated at health care facilities in the past was regarded as hazardous and needed to be incinerated first before it was disposed. The purpose of this study was to investigate health care waste (HCW) management practices employed in public health clinics in the iLembe District, with a view of developing a HCW management intervention strategy. METHODOLOGY The study design was observational, descriptive, and cross-sectional. Data was collected using a structured individual questionnaire, which was administered to key informants from 31 rural and urban government fixed public clinics in the iLembe District Municipality. RESULT Thirty public clinics in iLembe district participated in the study. A total of 210 kg/day (0.06 kg/patient/day) of HCW was estimated to be generated in public clinics, 69% was health care general waste (HCGW) and 31 % was health care risk waste (HCRW). The district's generation rate was 0.04 kg/patient/day and 0.018 kg/patient/day, for HCGW and HCRW, respectively. The study found that HCW was improperly managed in the district. DISCUSSION The findings are different when compared to World Health Organisation norms and this was attributed to improper segregation of waste categories other than sharp waste, which was given special treatment. Factors such as the number of patients, size of the clinic, types of health care services rendered, and socio-economics status of the patient played a pivotal role in the waste volume generated. It is evident that no proper HCW management plan was being implemented in the district public clinics. CONCLUSION The management of health care risk waste is of great concern. There is a need for development of a health care waste management intervention strategy that must be implemented consistently and universally in the district. RECOMMENDATIONS It is recommended that a proper health care waste management intervention strategy be developed and implemented in the whole district. This strategy must incorporate training programmes and a waste management plan. / Thesis (MPH)-University of KwaZulu-Natal, 2007.
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An investigation into total volatile organic compound exposure levels in homes and classrooms of asthmatic children in selected sites in Durban.Maharaj, Santosh Kumar. January 2008 (has links)
Indoor air quality has become an important health concern due to the number of indoor pollutants and the realization that even minimal exposures to volatile organic compounds may produce direct or indirect adverse health outcomes. Young people are most vulnerable to these poisonous chemicals as they spend much of their times indoors at homes, schools, nurseries and in day care centers. Exposure to volatile organic compounds indoors has been related to asthma and other respiratory symptoms. The adverse effects of air pollution on respiratory health in South Durban have been described in a number of studies. In 2000, a study in the South Durban Basin at Settlers Primary School demonstrated both a high prevalence of respiratory diseases amongst schoolchildren as well as an association between ambient air pollutants and other adverse health outcomes. The South Durban Health Study subsequently undertook a health risk assessment and an epidemiological study investigating this association further on behalf of the eThekwini Municipality. The study highlighted that relatively moderate ambient concentration of N02, NO, PMIO and S02 were strongly and significantly associated with a reduction in lung function among children with persistent asthma. Moreover, attending primary school in South Durban was significantly associated with increased risk from persistent asthma when compared to schools in North Durban. METHODS The descriptive study measured the total volatile organic compound levels within selected homes and schools of asthmatic children in South and North Durban. Recommendations for reducing or mitigating indoor total volatile organic compound exposures were made. The study involved a secondary analysis of data obtained from the South Durban Health Study. The monitoring for total volatile organic compounds within homes and classrooms was undertaken using passive samplers during a 72-hour period and analyzed using a gaschromatography/ mass spectrometry method. Temperature and humidity was assessed using temperature and humidity sensors. Statistical analysis was performed using SPSS version 13. The dataset comprised 140 total volatile organic compound samples from homes and 14 from classrooms. Total volatile organic compounds were measured in microgram per cubic meter (g/m3), temperature in degrees Celsius and relative humidity in percentage of moisture. RESULTS Total volatile organic compounds with levels in households ranging from 17g/m3 to 1440g/m3 and in classrooms ranging from 48g/m3 to 5292g/m3 were measured. The mean levels detected were significantly different in homes and classrooms / Thesis (MMed.)-University of KwaZulu-Natal, Durban, 2008.
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Pre-treatment preparation and loss-to-care of adults living with HIV from an antiretroviral therapy clinic in Durban, KwaZulu-Natal.Nixon, Krystal-Lee. January 2011 (has links)
Introduction. The demand for comprehensive Human Immunodeficiency Virus (HIV) and Acquired Immunodeficiency Syndrome (AIDS) services is greater than the available supply, particularly for the provision of antiretroviral therapy. The resulting bottleneck in service delivery has considerable implications for people living with HIV and for resource management. Aim. The purpose of this research was to investigate loss-to-care and associated variables of adult HIV-infected people who were eligible for antiretroviral therapy, from July 2004 to December 2007 at Sinikithemba HIV Clinic in Durban, KwaZulu-Natal. Methods. An observational descriptive and analytic cohort study design was used. Secondary data sourced from Sinikithemba were collated. All HIV-infected adults, 15 years and older when registered on the TrakCare database, who were eligible for antiretroviral therapy were included in the study. Data were extracted to describe the preparation of HIV infected adults who were eligible for antiretroviral therapy. Variables were first summarised and described before the confirmatory analytic steps were taken to measure associations at the p<0.05 significance level. Results. Of the 10 424 HIV-infected adults registered at Sinikithemba, 5470 (52%) were eligible for antiretroviral therapy from July 2004 to December 2007 and 2979 (54%) of these were lost to care prior to initiating antiretroviral therapy. Six exposure variables were significantly associated with this loss-to-care, (gender, baseline CD4 count, pre-eligibility care, antiretroviral therapy delay, preparation step and waiting time). These variables remained significantly associated with loss-to-care even after controlling for confounding with logistic regression. Discussion and Recommendations. With the rapid scale-up of antiretroviral therapy programmes, the outcome of those people living with HIV lost to care before commencing therapy have not been adequately documented. This large cohort enrolled over three-and-a-half years demonstrates that the loss-to-care prior to initiation of antiretroviral therapy is a significant problem that needs to be further investigated. Focusing retention strategies at the pre-antiretroviral therapy stage of HIV care will improve overall programme outcomes. / Thesis (M.Med.)-University of KwaZulu-Natal, Durban, 2011.
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Level of hospitals' preparedness for a mass disaster during the 2010 FIFA World Cup Soccer in the eThekwini District of KwaZulu-Natal.Singh, Nirvadha. January 2010 (has links)
International mass sports gatherings like the FIFA (Federation Internationale de Football Association) World Cup Soccer and Olympics can cause great challenges to local healthcare systems and emergency medical services. History has shown that disasters do occur during these events, whether on a small or large scale. Disaster Management Practitioners from the public health perspective widely recognize that poor planning and a range of other underlying factors, create conditions of vulnerability. These result in insufficient capacity or measures to reduce hazards’ potentially negative consequences. The eThekwini District has to be prepared in the event of a mass disaster. Pre-empting and planning for disasters will lead to the safety and security of our citizens. The aim of this study was to undertake a baseline survey (in a total number of eleven public sector hospitals) to assess the state of hospital readiness, medical preparedness, and emergency care in preparation for the 2010 FIFA World Cup Soccer in the eThekwini District. A general assessment tool in the form of a standard questionnaire, and a walkthrough visit with a checklist, was used to collect data. There is no previous study conducted at the eThekwini District to assess requirements for an international event in terms of a mass disaster. South Africa is a developing country, and this was the first time any developing country had hosted a sporting event on such a large magnitude thus there are no international standards on sports disaster management by any other developing countries to generalise to eThekwini District. The current disaster management operational plan that is being used for the World Cup is based on a United Kingdom integrated management philosophy tool. The study herein adopted a public health approach and incorporates the Yokohama Strategy within its tool along with the use of HMIMMS and MIMMS in the assessment of the clinical criteria. The perceived minimum requirements suggested by the hospitals and a Provincial Task Team, from the Provincial Health Disaster Management office, was used as a guideline. The study showed that although disaster plans and policies are in situ, there still exists a need for resources to be directed toward skills training, attraction and retention of healthcare professionals, revitalisation of emergency and theatre areas and the commissioning of more isolation units. The results of the study would enable the District Office to note any shortcomings and lack of resources in public sector hospitals. The study outcome would be important for the implementation of any strategic planning to aid the hospitals in preparation for mass disasters that may occur during the 2010 FIFA World Cup Soccer. / Thesis (M.Med.)-University of KwaZulu-Natal, Durban, 2010.
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Epidemiological and clinical status of South African primary school children : investing in the future.Jinabhai, Champaklal Chhaganlal. January 2001 (has links)
The physical, psychological and social development of school children has been
neglected - partly because they were seen as healthy "survivors" of the ravages of
childhood illnesses, and partly because of the way in which health services are
organized (such as the traditional under-five maternal and child health (MCH)
services and the curative PHC clinic services). From the age of five years children
undergo rapid and profound bio-psycho-social development, to emerge in
adolescence as the next generation of leaders and workers. Securing their future
growth and development is vital for any society to be economically and socially
productive.
A substantial body of national and intemational literature has recognised the
detrimental impact of helminthic infections and micronutrient deficiencies on the
physical and psychological health and development of school children; which
requires appropriate nutritional interventions. Concern has been expressed that
these adverse biological, physical and social deprivations have a cumulative
impact on several dimensions of children's growth. Most important, apart from
stunting physical growth, is the inhibition of educational development of school
children. Recent evidence strongly suggests a powerful interaction between
physical and psychosocial growth and development of children. Inhibition of either
component of a child's well-being has adverse implications. Conversely,
investments in the physical and psychological development of children are likely to
generate substantial health and educational benefits and are a worthy investment
to secure a healthy future generation.
In summary, there are a number of reasons for, and benefits of, investing in
school-based health and nutrition interventions. They are likely to improve
learning at school and enhance educational outcomes; create new opportunities to
meet unfulfilled needs; redress inequity; build on investments in early child
development and promote and protect youth and adolescent development. Health
and nutrition interventions such as school feeding programmes, micronutrient
supplementation and deworming aim to improve primary outcomes of macro and
micro-nutrient deficiencies, parasitic and cognitive status; as well as secondary
outcomes of developing integrated comprehensive school health policies and
programmes. This rationale served as the conceptual framework for this study. This
theoretical framework views improvements of the health, nutritional, cognitive and
scholastic development status of school children as the primary focus of policies,
strategies and programmes in the health and education sector. This focus constitutes
the central core of this thesis. Optimum social development requires investments in
both the health and educational development of school children, so as to maximise
the synergies inherent in each sector and to operationalise national and international
strategies and programmes.
As part of the larger RCT study a comprehensive nutritional, health and
psychological profile of rural school children was established through a
community-based cross-sectional study. Eleven schools were randomly selected
from the Vulamehlo Magisterial District in southern KwaZulu-Natal (KZN). Within
each school, all Standard 1 pupils, aged between 8 - 10 years, were selected
giving a final study sample of 579 children. Some of the observed prevalence's
were stunting (7.3%), wasting (0.7%), anaemia (16.5%) (as measured by
haemoglobin below 12 g/dl), vitamin A deficiency (34.7%) (as measured by serum
retinol below 20 ug/dl) and serum ferritin below 12ng/ml (28.1%). This study
established that micronutrient deficiency, parasitic infestations and stunting remain
significant public health problems among school-aged children in South Africa.
Combining micronutrient supplementation and deworming are likely to produce
significant health and educational gains.
To determine the impact of single and combined interventions (anthelminthic
treatment and micronutrient supplements) on nutritional status and scholastic and
cognitive performance of school children, a double-blind randomised placebo
controlled trial was undertaken among 579 children 8-10 years of age. There was
a significant treatment effect of vitamin A on serum retinol (P<0.01), and the
suggestion of an additive effect between vitamin A fortification and deworming.
Vitamin A and iron fortification also produced a significant treatment effect on
transferrin saturation (P<0.05). Among the dewormed group, anthelminthic
treatment produced a significant decrease in the prevalence of helminthic
infections (P<0.02), but with no significant between-group treatment effect
(P>0.40). Scholastic and cognitive scores and anthropometric indicators were no
different among the treated or the untreated children. Fortified biscuits improved
micronutrient status among rural primary school children; vitamin A combined with
deworming had a greater impact on micronutrient status than vitamin A fortification
on its own; while anthelminthic treatment produced a significant reduction in the
overall prevalence of parasite infection.
The prevalence's of Ascaris lumbricoides, Trichuris trichiura and Schistosoma
haematobium declined significantly sixteen weeks post-treatment. The levels of
both prevalence and intensity in the untreated group remained constant. The cure
rates over the first two weeks of the study were 94.4% for Ascaris lumbricoides,
40% for Trichuris trichiura, and 72.2% for Schistosoma haematobium. The benefits
of targeted school-based treatment in reducing the prevalence and intensity of
infection supports the South African government's focus of using school-based
interventions as part of an integrated parasite control programme. These
strategies and programmes were found to be consistent with the
recommendations of WHO and UNICEF.
The nutritional transition facing developing and middle-income countries also has
important implications for preventive strategies to control chronic degenerative
diseases (Popkin B, 1994; WHO 1998; Monyeki KO, 1999). This descriptive study,
comparing BMI data of school children over three time periods, found a rising
prevalence of overweight and obesity among South African school children.
Obesity as a public health problem requires to be addressed from a population or
community perspective for its prevention and management.
Environmental risk factors such as exposure to atmospheric pollution remain
significant hazards for children. Lead poisoning is a significant, preventable risk
factor affecting cognitive and scholastic development among children. The
prevalence of elevated blood lead (PbB) levels in rural and semi-urban areas of
KwaZulu-Natal (KZN) as well as the risk factors for elevation of PbB among
children in informal settlements were examined. This study investigated over 1200
rural and urban children in two age groups: 3-5 and 8-10 years old. Average PbB
level in peri-urban Besters, an informal settlement in the Durban metropolitan
region, was 10 ug/dl with 5% of the children showing PbB level of greater than 25
ug/dl. By comparison, average PbB value in Vulamehlo, a rural area located
90-120 km from Durban, was 3.8 ug/dl and 2% of the children's PbB levels were
greater than 10 ug/dl.
Since the cognitive and scholastic performance of school children was a primary
outcome measure in this study, it was important to explore other factors that
influenced this variable. The performance scores of all four tests in the battery,
among the cohort of a thousand rural and urban children, were in the lower range.
The educational deficit identified in this test battery clearly indicates the impact of
the inferior "Bantu" educational system that African children have experienced in
South Africa.
Aspects of the School Health Services that were investigated in this descriptive
study included the services provided and their distribution; assessment of health
inspection; health education and referral processes undertaken by the School
Health Teams; perceptions of managers, providers and recipients of the service;
as well as the costs of the provision of the service in KwaZulu-Natal. In KwaZulu-Natal,
there were School Health Teams In all the 8 health and education regions in
the province. In total, there were 95 teams in the province, consisting of nearly 300
staff members. The School Health Teams were involved in a wide range of
activities - 74% of all teams were involved in health inspection and 80% were
involved in health education. The total annual cost of delivering School Health
Services in the province in 1995 was estimated to be approximately R8 750 000.
Given the rise of HIV and AIDS in the province, School Health Services need to
play a central role not only in prevention, but also in assisting with the acceptance
of HIV-positive children within schools. It is recommended that the current and
future draft SHS policy guidelines be approved by the relevant authorities for
immediate implementation. Districts should consider developing "Health Promoting
Schools", with School Health Teams being a central resource.
This thesis has explored several aspects of the epidemiological profile of school
children in rural and urban settings in KwaZulu-Natal. It has established that
school children are exposed to a range of risk factors ranging from nutritional
deficits, parasitic infections, atmospheric lead poisoning and a rising prevalence of
overweight. All of these risk factors may compromise their physical, psychological
and social development. A number of health interventions have been identified, which have the potential to address these problems. Such investments are essential to secure the health of future generations. / Thesis (M.D.)-University of Natal, Durban, 2001.
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Vocation-specific isiZulu language teaching and learning for medical students at the University of KwaZulu-Natal.Matthews, Margaret Glynnis. January 2013 (has links)
Introduction
Being an effective communicator is a core competency required of all health care
practitioners. Some undergraduate medical students at the Nelson R. Mandela School of
Medicine (NRMSM), University of KwaZulu-Natal, Durban, are unable to communicate in
isiZulu, the mother tongue of nearly 80% of the 10.2 million people in the province, and the
most common home language spoken in South Africa. A one-year isiZulu course to teach
communicative competence in the language, and assessed in the first three years of the 6-year
MBChB programme, is currently offered at the first year level to medical students.
Aim
This study was conducted in 2012 to assess how isiZulu clinical communication was
perceived by a third year cohort of medical students, and whether current teaching in the
period 2010-2012 had prepared them to communicate with their patients.
Methods
An observational, cross-sectional study design was used to assess the knowledge, attitude and
practice of the study group through a self-completed questionnaire. Their knowledge of
isiZulu was assessed in a written test, and the students’ marks were compared with their
marks in 2010. Oral competence was assessed in an isiZulu history-taking station in the
objective structured clinical examination. Students’ comments on their experiences and their
recommendations were recorded. Ethics approval was obtained to conduct the study, and
informed consent was obtained from participants.
Results & Discussion
Medical students’ competence in isiZulu had improved. They were largely positive about
learning the language of their patients but seldom used the language in the clinical setting.
Many students indicated that the current teaching of isiZulu in the programme was
inadequate for their needs. Conclusion & Recommendations
Although isiZulu is taught to non-isiZulu students, this does not convert into an ability to use
the language in the clinical setting. In order for medical students to acquire a satisfactory and
safe level of communicative competence in isiZulu, and in line with the UKZN Language
Plan to emphasize language training specific to various vocational groups, it is recommended
that the teaching, learning and assessment of isiZulu language and culture be integrated into
all levels of the undergraduate medical programme in the form of vocation-specific isiZulu
for medical students. / Thesis (M.Med.Sc.)-University of KwaZulu-Natal, Durban, 2013.
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Quality of deep fried chip cooking oil at fast food outlets in the South Central Operational Entity within Ethekwini Municipality.Padayachee, Theresa. January 2006 (has links)
The demand for deep fried chips by public and the number of people entering the fast food industry in the form of fast food outlets has increased tremendously. Frying oils are very expensive and are the most important ingredient used in the preparation of fried foods. Due to
high oil costs and lack of knowledge, frying oils are used to their maximum. This has resulted in the abuse of deep fried chip cooking oils. The overall quality of the deep fried chip cooking oil used in the South Central Operational Entity of the eThekwini Municipality is not known but abused cooking oils have been identified by Environmental Health Practitioners (EHP's) during routine inspections of fast food outlets.
Considering all of the above, the objectives of the proposed research were: (l) Determine the overall prevalence of the use of abused deep fried chip cooking oils at fast food outlets in the South Central Operational Entity of the eThekwini Municipality. (2) Determine in which supervision areas in the South Central Operational Entity the use of abused cooking oil is most prevalent. (3) Determine current/reported practices in preserving the quality of chip oil. (4) Make appropriate recommendations to owner/managers of the fast food outlets and to Environmental Health Practitioners. The study design was observational utilizing a Rapid Epidemiological Assessment (REA) technique, with both a descriptive and analytical component. All fast food outlets making deep fried chips in the South Central Operational Entity
registered with the eThekwini Health Department at the time of the study were included in the study population. The Lot Quality Assurance Sampling (LQAS) method was used to determine the overall prevalence of the use of abused oil and to determine supervision areas
reached the predetermined service target. A total of 100 fast food outlets were sampled. An oil sample from each fast food outlet, which was taken and sent to a laboratory where an Oxifrit Test was done on every oil sample taken. The Oxifrit Test was the benchmark in this study. EHP's of eThekwini Municipality collected further data by means of an observational checklist and a closed-ended questionnaire, which aimed to establish cooking oil preservation practices. The study revealed that 60 of the outlets had oil that was acceptable whereas 40 had oil that
was unacceptable (abused oil). In the multivariate analysis the only factors significantly associated with abused oil were the condition of the fryer and frequency of oil change. Supervision Areas 6, and 4 had more abused deep fried chip cooking oil than average in the South Central Operational Entity. For further prioritization, Supervision Areas 6 and 4 fell below the decision rule for majority of acceptable oil preservation practices, thus Supervision Areas 6 and 4 will be targeted for intervention. Intervention will include education, monitoring and ultimately enforcing the law by EHP's to ensure safe use of deep fried chip cooking oil in the South Central Operational Entity within
eThekwini Municipality. / Thesis (M.P.H.)-University of KwaZulu-Natal, 2006.
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Follow-up care of infants born in a prevention of mother-to-child transmission programme in an urban hospital in KwaZulu-Natal, South Africa.Chetty, Terusha. January 2011 (has links)
Introduction.
The Human Immunodeficiency Virus (HIV) is the main contributor to rising child mortality in South Africa. Although prevention of mother-to-child transmission programmes have been implemented in the country, little is known about the clinical and loss to follow-up outcomes of infants born to HIV-infected women attending these programmes.
Purpose.
The purpose of the study was to describe the clinical and loss to follow-up outcomes of HIV-exposed infants whose mothers had received antiretroviral therapy or prophylaxis during their pregnancy at the Prevention of Mother-to-Child Transmission programme at McCord Hospital. Furthermore, maternal socio-demographic characteristics associated with these outcomes were determined.
Methods.
An observational retrospective cohort study design was used. The study population consisted of infants whose mothers had received antiretroviral prophylaxis or therapy at McCord Hospital, and were delivered at McCord Hospital, and/or were brought back to McCord Hospital, following delivery from 1 May 2008 to 31 May 2009.
Results.
Data on 265 infants was analysed. Of the 220 infants who were tested, the HIV transmission risk was 2.7% (n=6; 95% Cl: 1.0% to 5.8%) at 6 weeks of age. Overall, 40.4% of infants in the cohort were lost to follow-up (n=105, 95% Cl: 34.4 to 46.6). In the multivariable model (n=253), late booking for first antenatal visit at or after 28 weeks of gestation (adjusted hazard ratio (AHR) 2.3; 95% Cl: 1.0 to 5.1, p=0.044) was a risk factor for loss to follow-up. Compared to having an emergency caesarean section, having an elective caesarean section (AHR 1.9; 95% Cl: 1.1 to 3.5) or normal vaginal delivery (AHR 2.5; 95% Cl: 1.4 to 4.5) was significantly associated with loss to follow-up of infants. Discussion. The substantial attrition of infants born to HIV-infected mothers in the Prevention of
Mother-to-Child Transmission programme at McCord Hospital undermined the goals of the programme, and underestimated the effect of infectious disease morbidity, mortality and HIV transmission risk associated with these infants.
Recommendations.
Counselling mothers on the health benefits to their HIV-exposed infants of attending the follow-up clinic and tracing of infants who have been lost to follow-up is vital to the operational effectiveness of the Prevention of Mother-to-Child Transmission programme at McCord Hospital. / Thesis (M.Med.)-University of KwaZulu-Natal, Durban, 2011.
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Respiratory health of the informal stone crushers in Dar-Es-Salaam.Kessy, Florian Mathias. January 2010 (has links)
Introduction.
Stone crushing in Dar-es-Salaam Tanzania is largely an informal occupational activity,
with approximately 7000 workers exposed to varying level of respirable dust. A highly
marginalized, self employed, informal stonecrusher is prone to multiple work related risks,
particularly dust related respiratory diseases.
Aim.
This study, the first to be done among informal stone crushers in Southern Africa,
aimed at determining the prevalence of dust related respiratory outcomes and relationships
between these health endpoints and exposure to respirable dust in this sample of stonecrushers.
Methods.
This was primarly a cross-sectional descriptive study with analytic components. This
study analysed a subset of data collected in a health survey of stone crushers in Kigamboni
informal stone quarry in Dar-es-Salaam, Tanzania in 2007. All 200 workers working in the
quarry were interviewed. A subset of 86 and 59 workers underwent exposure assessment and
health assessments (spirometry and chest radiography) respectively. Associations were
investigated between exposure measures and respiratory outcomes.
Results.
The average age of the workers was 36.3 years with 51.5% males participating in the
study. Smoking was common with 30.1% male, 8.25% female smokers, with 2% ex-smokers.
Personal dust sampling showed varying dust levels ranging from 0.5-2.8mg/m3 with geometric
mean of 1.2gm/m3. The exposure duration of workers in the quarry ranged from 1-62 years
with mean of 7.8 years. No single worker was found to use personal protective equipment at
work.
Reported prevalence of doctor diagnosed respiratory diseases was low: pulmonary
tuberculosis (2%), chronic bronchitis (2%), asthma (3%), pneumonia (3%). In contrast, there
was high prevalence of respiratory symptoms: chronic cough (13.5%), phlegm production
(14.5%), productive cough (10%), wheezing (14%), mild breathlessness (9.5% ) and coughing
blood (7.5%). Mean forced expiratory volume in one second (FEV1) and forced vital
capacity (FVC) adjusted for age, height and sex was 2.6L/min and 3.7 L respectively, among
males and 2.1L/min and 3.0L respectively among females.
Adjusted exposure odds ratios for symptoms were statistically significant for mild and
moderate breathlessness with odds ratios of 3.4 and 3.1 respectively.
Linear regression showed statistically significant decline of 2.3mls in FEV1 with years
of exposure while controlling for sex, age, height , doctor diagnosed TB and smoking showing
that with prolonged exposure in the quarry, workers are at a risk of developing obstructive lung
disease. This trend was not evident for FVC.
The majority of films were normal (60.9%), with 19.6% read as 1/0 and 19.9% as 0/1.
Discussion.
This study identified adverse respiratory outcomes among informal stonecrushers,
particularly a high prevalence of respiratory symptoms and clinically important lung function
deficits. These are in keeping with other environment studies where workers were exposed to
respirable dust.
Recommendations.
Urgent policy initiatives for developing cost effective hazard control, engineering
interventions to protect these marginalized self-employed informal sector stonecrushers are
needed. / Thesis (M.Med.)-University of KwaZulu-Natal, Durban, 2010.
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