Aim Nutrient profiling is defined as “the science of classifying or ranking food items according to their nutritional composition for reasons related to preventing disease and promoting health, and can be used to govern the criteria under which nutrient and/or health claims may be made”. The validation of a nutrient profiling model (NPM) is an essential part of the model development process, and is extremely important for the model to meet basic scientific criteria. This mini-dissertation investigated the content and convergent validity of a suitable NPM for South Africa. Method Content validity was tested for by comparing the NPM classification of 131 “indicator” foods with the classification of the “indicator” foods by the Food Based Dietary Guidelines (FBDGs). Convergent validity was tested for by comparing the standard ranking of a representative data set of food items (n = 128) by nutrition experts with the classification of the food items by the NPM. The questionnaire asked respondents to rank 40 foods (electronically generated from a master list of 128 foods) according to the nutritional information provided from “more healthy” to “less healthy” using a six point Likert scale. The 128 foods were selected to be representative of the South African diet. These questionnaires were sent via e-mail to all full members (n = 1105) of the Association of Dietetics in South Africa. The draft “Guiding principles and framework manual for the development or adaptation of nutrient profile models” dated 22 February 2011 (WHO, 2011), was used as a guide in the validation process of the NPM. Results The NPM showed good content validity: the way that the NPM categorises foods correspond well with that of the FBDGs (kappa statistic = 0.73). Two hundred and ninety two responses were received (26.4%) from the nutrition experts, these responses were used to rank the 128 foods by the average score which they received from the nutrition experts. The NPM also showed good convergent validity: the NPM classification of foods had a good correlation with the standard ranking of foods by dietitians (r = 0.853; p = 0.0001). Conclusion The NPM demonstrated good content validity by classifying food items in way that supports the FBDGs with the exception of a few processed food items and combined food items. The NPM also demonstrated good convergent validity by classifying food items in accordance with the views of nutrition experts in South Africa. / Thesis (MSc (Dietetics))--North-West University, Potchefstroom Campus, 2013.

Aim Nutrient profiling is defined as “the science of classifying or ranking food items according to their nutritional composition for reasons related to preventing disease and promoting health, and can be used to govern the criteria under which nutrient and/or health claims may be made”. The validation of a nutrient profiling model (NPM) is an essential part of the model development process, and is extremely important for the model to meet basic scientific criteria. This mini-dissertation investigated the content and convergent validity of a suitable NPM for South Africa. Method Content validity was tested for by comparing the NPM classification of 131 “indicator” foods with the classification of the “indicator” foods by the Food Based Dietary Guidelines (FBDGs). Convergent validity was tested for by comparing the standard ranking of a representative data set of food items (n = 128) by nutrition experts with the classification of the food items by the NPM. The questionnaire asked respondents to rank 40 foods (electronically generated from a master list of 128 foods) according to the nutritional information provided from “more healthy” to “less healthy” using a six point Likert scale. The 128 foods were selected to be representative of the South African diet. These questionnaires were sent via e-mail to all full members (n = 1105) of the Association of Dietetics in South Africa. The draft “Guiding principles and framework manual for the development or adaptation of nutrient profile models” dated 22 February 2011 (WHO, 2011), was used as a guide in the validation process of the NPM. Results The NPM showed good content validity: the way that the NPM categorises foods correspond well with that of the FBDGs (kappa statistic = 0.73). Two hundred and ninety two responses were received (26.4%) from the nutrition experts, these responses were used to rank the 128 foods by the average score which they received from the nutrition experts. The NPM also showed good convergent validity: the NPM classification of foods had a good correlation with the standard ranking of foods by dietitians (r = 0.853; p = 0.0001). Conclusion The NPM demonstrated good content validity by classifying food items in way that supports the FBDGs with the exception of a few processed food items and combined food items. The NPM also demonstrated good convergent validity by classifying food items in accordance with the views of nutrition experts in South Africa. / Thesis (MSc (Dietetics))--North-West University, Potchefstroom Campus, 2013.

Ageing in Africa and the world over is a phenomenon that affects individuals and societies. The expanding older population (people aged 60+) in South Africa led to this research, which represents an attempt to explore the experiences of loneliness of older persons in Africa and thereby gain some understanding of the subjective experiences of loneliness of a group of older African persons in their socio–cultural context. Defining loneliness from the existing literature was challenging since it became evident that loneliness in the literature is defined and researched largely in terms of individual meanings attached to the concept, and the applicability of such individual meanings to an African context remains unconfirmed. Experiences of loneliness are not well known among older Setwana–speaking persons, and few studies have focused on collectivistic experiences as such. Loneliness is considered a complex, contextual experience that goes beyond the individual and also includes culture as an inseparable aspect of people’s lives. Conceptualising loneliness as a socially constructed phenomenon places this study within the paradigm of phenomenology exploring people’s experiences. The philosophy of ubuntu relates to being in the world among others thus creating the concept of a social self. In essence, to be a self, one has to belong to a community, and one is always contextualised as an existence among others in interaction. A qualitative design was used together with a purposive convenience sampling method whereby the participants were selected on the basis of their availability during the research period. The participants’ ages ranged from 61 up to 73, and the sample included 16 female and two male participants. Two data sets were collected at different times from members of the Day Care Centre for the Aged in Ikageng, Potchefstroom, South Africa, as well as community residents who did not attend the centre. Various qualitative techniques were used to collect the data including the Mmogo–methodTM, in–depth individual interviews and focus groups. Multiple methods were employed for analysing the data including phenomenological analysis, key–words–in–context and analysis strategies as stipulated by the Mmogo–methodTM. The rigour of the data was enhanced through the use of diverse qualitative data–gathering methods as well as an array of qualitative analysis methods in a process known as crystallisation. Ethical approval was granted by the Ethics Committee of the North–West University, Potchefstroom Campus, under a larger project, “An exploration of enabling contexts (05K14)”. The researchers constructed two main themes from the findings: descriptions of loneliness and coping with loneliness. Loneliness related to the self and to others, and coping with loneliness involved actively engaging with the environment, being with others and using coping strategies. Some of the findings are linked to the existing literature, and some are unique relating to being with others and including social embeddedness as a multi–layered phenomenon connected to experiences of loneliness - it is here where the literature falls short in clarifying the findings within our context. Suggestions are made for future research, and some of the limitations of the study are pointed out. To conclude: Loneliness is a multi–dimensional phenomenon that older Batswana people experience on many levels of engagement with and disengagement from the self and others. / Thesis (M.Sc. (Research Psychology))--North-West University, Potchefstroom Campus, 2011.

Ageing in Africa and the world over is a phenomenon that affects individuals and societies. The expanding older population (people aged 60+) in South Africa led to this research, which represents an attempt to explore the experiences of loneliness of older persons in Africa and thereby gain some understanding of the subjective experiences of loneliness of a group of older African persons in their socio–cultural context. Defining loneliness from the existing literature was challenging since it became evident that loneliness in the literature is defined and researched largely in terms of individual meanings attached to the concept, and the applicability of such individual meanings to an African context remains unconfirmed. Experiences of loneliness are not well known among older Setwana–speaking persons, and few studies have focused on collectivistic experiences as such. Loneliness is considered a complex, contextual experience that goes beyond the individual and also includes culture as an inseparable aspect of people’s lives. Conceptualising loneliness as a socially constructed phenomenon places this study within the paradigm of phenomenology exploring people’s experiences. The philosophy of ubuntu relates to being in the world among others thus creating the concept of a social self. In essence, to be a self, one has to belong to a community, and one is always contextualised as an existence among others in interaction. A qualitative design was used together with a purposive convenience sampling method whereby the participants were selected on the basis of their availability during the research period. The participants’ ages ranged from 61 up to 73, and the sample included 16 female and two male participants. Two data sets were collected at different times from members of the Day Care Centre for the Aged in Ikageng, Potchefstroom, South Africa, as well as community residents who did not attend the centre. Various qualitative techniques were used to collect the data including the Mmogo–methodTM, in–depth individual interviews and focus groups. Multiple methods were employed for analysing the data including phenomenological analysis, key–words–in–context and analysis strategies as stipulated by the Mmogo–methodTM. The rigour of the data was enhanced through the use of diverse qualitative data–gathering methods as well as an array of qualitative analysis methods in a process known as crystallisation. Ethical approval was granted by the Ethics Committee of the North–West University, Potchefstroom Campus, under a larger project, “An exploration of enabling contexts (05K14)”. The researchers constructed two main themes from the findings: descriptions of loneliness and coping with loneliness. Loneliness related to the self and to others, and coping with loneliness involved actively engaging with the environment, being with others and using coping strategies. Some of the findings are linked to the existing literature, and some are unique relating to being with others and including social embeddedness as a multi–layered phenomenon connected to experiences of loneliness - it is here where the literature falls short in clarifying the findings within our context. Suggestions are made for future research, and some of the limitations of the study are pointed out. To conclude: Loneliness is a multi–dimensional phenomenon that older Batswana people experience on many levels of engagement with and disengagement from the self and others. / Thesis (M.Sc. (Research Psychology))--North-West University, Potchefstroom Campus, 2011.