Background: Juvenile idiopathic arthritis (JIA) refers to a group of auto-immune conditions involving joint inflammation that first appears before the age of 16. In the United States, about 294,000 children are affected. Although JIA can be widely attributed to genetic factors, the consensus is that environmental factors also play a role. Attempts to assess the role of environmental factors, though scarce, have focused on the role of infections, smoking exposure, and breastfeeding. Hygiene hypothesis, which suggests that adaptive immunological response improves with higher frequencies of pathogen exposure in early childhood, has been used to try to explain the risk of JIA. Common markers of microbe exposure in early life include sibling number, pet number, and maternal parity. Some prior studies conducted outside the U.S. suggests that increasing sibling number is protective against the risk of JIA. This study aimed to evaluate prior findings, using data from the U.S. Methods: The study used data from the 2017 Centers for Disease Control and Prevention National Survey for Child Health. The survey used a sample size of 21599 children to estimate the number of children in the U.S. Descriptive statistics was carried out, and logistic regression was used to determine the association between family number and the odds of developing JIA, while adjusting for sociodemographic variables. Family number was used as a proxy for sibling number. SAS v 9.4 was used for analysis. Results: Complete data on all the variables of interest were available for 17618 children, of which 67 had JIA. Although there was a marginal association between sibling number and JIA in the unadjusted model (OR [95% CI] 0.983-1.602) (P=0.068), in the adjusted model, there was no significant association between JIA and sibling number ([OR 95% CI] 0.8985-1.447) (P=0.29). There was a significant association between JIA and age, low birth weight, highest education level in the family, while sex had a marginal association. Conclusion: There was no association between family size and the development of JIA in this study. While some prior results have supported the observed significant effect of low birth weight, the disparity in results between this study and the Australian study could be due to the use of family number instead of sibling number. Further studies should assess the association of sibling number and developing JIA in the U.S.

This disseration is a case study of reproductive practice among Kurdish rural-urban migrant women in Van, Turkey. Van is one of the eastern provinces where high fertility persists despite the rapid fertility decline in the country. In Van and some other provinces where Kurdish population concentrates, however, fertility levels not only continue to be high but also increased in the period between 1980 and 2000. In order to explore the social dynamics behind the divergent fertility trend, this dissertation conducted interviewing with women in a Kurdish migrant neighbourhood and examined their reproductive experiences from the feminist political economic perspective that pays particular attention to reproduction&rsquo / s embeddededness in patriarchal social relations which are contingent upon political economic contexts. This dissertation argues that Kurdish migrants in the studied neighbourhood experienced, and still experience, considerable socioeconomic insecurities resulted from the neoliberal economic policy since the 1980s and the destructive mass displacement in the 1990s. Migration to the city could offer women empowering opportunities. Yet, while the traditional rural form of patriarchal practices lingered until recently, a new form of patriarchy seeks to restore masculine confidence in the context of insecurities by tightly controlling the woman&rsquo / s movement and considerably hinders her access to public spaces and hence reproductive healthcare. This dissertation proposes that enduring high fertility among the recent Kurdish migrants can be closely related to the form of patriarchy reconfigured in a way to work against the woman&rsquo / s autonomy which is essential for the exercise of reproductive rights.

Religion’s influence on fertility behavior has long been discussed. This paper examines the consequences of family size for the intergenerational transmission of religiosity. Using the first and third waves of the National Study of Youth and Religion, I find that family size is a positive predictor of religious salience and service attendance, particularly in emerging adulthood. While parents remain strong influences on both family size and their children’s religiosity, family size appears to provide additional support to religious commitments in emerging adulthood by fostering a more conservative orientation towards family formation. This study adds nuance to our understanding of the dynamics of religiosity in emerging adulthood and provides new evidence of the close connection between religion, family, and fertility. / text

Part I. While births provide researchers with a natural dichotomy, fertility intentions are not inherently dichotomous. Intentions are predictions about the future and, as such, are couched in considerable uncertainty. Ignoring this uncertainty hides much of what could be learned from data on fertility intentions. This paper presents a model which allows analysis of the full range of intentions. After selecting a sample of women in the later stages of childbearing (women who intend less than two additional children) from the 1965 and 1970 National Fertility Studies, I show that: (1) substantial portions of women at this stage of the reproductive life cycle are indeed uncertain of their parity specific intention, (2) this uncertainty, like more firm intentions, varies by age and parity as my model predicts, and (3) there were significant shifts in the level of certainty between 1965 and 1970. Specifically, while intentions for third, fourth, and fifth births declined, more women "didn't know" if they intended to have another child or not. Among those not intending another child, more seemed uncertain of this intention in 1970 than did comparable women in 1965. In contrast, those intending another child seemed more certain in 1970. These changes in intentions and uncertainty suggest a need for caution in forecasting a decline in intended family size since this pool of uncertain women has the potential to increase the birth rate substantially. Part II. Adolescence brings into play forces which aid and hinder the intergenerational transmission of religious behavior. First, there is identification with parents and the inertia of childhood religious training. Secondly, a countervailing force is rebellious and assertive, and is aided by the American normative context of religious freedom. This analysis focuses on a net result of these forces--the correspondence between the prayerfulness of Catholic parents and their offspring in the period 1963 to 1974. Results indicate that parents strongly influence the frequency of their offspring's prayer. But the strength of the effect does vary significantly by the parent's sex, the adolescent's sex, and the nature of the parent's behavior (i.e. whether parents pray frequently, infrequently, or with moderate frequency). Over this period, however, there was great stability in the structure of religious socialization within the Catholic family. Observed marginal change indicates that the frequency of mothers' and daughters' prayer declined, and to a lesser extent, so did fathers' and sons' prayer. Importantly, the decline in adolescents' prayer does not indicate a lesser parental influence. Instead, parents seem less religious due, I argue, to the impact of the birth control encylical, Human Vitae. The adolescents' decline in prayer is evidence of an "echo" in the following generation. Part III. The modernization process and America's unique historical development caused changes in both the structure and function of American religion. The trend has been toward more individualized beliefs and "privatized" religious behaviors. The structure of this "privatized religion" seems capable of performing important functions in post-industrial society. Firm beliefs provide a sense of meaning and belonging in everyday life and allows answers to "ultimate questions". These beliefs can provide support in times of crisis. Finally, private religious behaviors can provide rewarding experiences in and of themselves. Using frequency of prayer as a measure of the intensity of "privatized" religious beliefs, I find that prayer is associated with greater happiness or psychological well-being. This effect is pervasive with respect to the respondent's sex and the Protestant-Catholic distinction. However, prayer most affects the happiness of those under 30 years of age and those over 50. This variation by age suggests that prayer is most important where institutional ties and support are weakest.

Recent studies on marriage patterns in South Africa have revealed a clear trend towards decreasing proportions of married women and an increase in age at first marriage (Udjo, 2001; Budlender et al., 2004). Despite marriage being one of the most important proximate determinants of fertility, the role of these nuptiality changes on the country’s decreasing fertility levels has not been adequately explored. Using data from the 1998 South African Demographic Survey, this paper fills this research gap by examining the marriage and fertility trends among African women in South Africa. The decision to focus on African women hinged on two basic factors; (1) available evidence shows that changes in marriage patterns are most notable in this racial group, and (2) African women have the highest fertility level relative to other racial groups. The results show that marriage patterns have been changing over time. The proportions married are low and late among African and rural women. There is an increase in the proportion of women who are cohabiting and never-married. Fertility levels are different for marital status, with the married and widowed women having the highest mean number of children ever born and the least number of children ever born is among the never-married women. Furthermore, the mean number of children ever born is among the highest in the older ages for all women. Kaplan-Meier estimates indicate that half of the divorced and widowed women have their first birth as early as age 18 years, compared to age 20 for the never-married and the cohabiting women, and age 22 for the married women. The mean age at first birth for African women is 19.7 years compared to 21.2 years for non-African women. Overall, socio-economic and demographic factors such as educational attainment, place of residence, marital status, race, and age have a significant effect on the age of a woman at first birth. / Thesis (M.A.)-University of KwaZulu-Natal, Durban, 2009.

There is a belief that economic resources are growing at a slow pace such that they fail to meet the demands made by an increase in population. Because of the critical contribution fertility makes to the high growth rates of a nation it is important to understand factors behind its change. This study seeks to contribute to such an understanding by providing an assessment of fertility and its proximate determinants in Lesotho. It utilises data from the 2001 Lesotho Demographic Survey and the 2002 Lesotho Demographic Survey Supplementary Enquiry. The study reveals a moderate decline in fertility between 1977 and 2002 (from 5.8 to 4.5). This decline in fertility is attributable to a rise in contraceptive prevalence and an increase in non-marriage. The index of marriage declined by 27.5 percent between 1977 and 2002, from 0.69 to 0.50 and the singulate mean at marriage increased from 20 years to 24 years among females. Thus making non-marriage the greatest fertility- reducing factor in 2002. While, the index of contraception decline by 30.1 percent from 0.93 to 0.65 and the national CPR increased from 23.2 percent in 1991/92 to 43.9 percent in 2002. As a result contraception became the second greatest inhibitor of fertility. Though the actual effect of postpartum infecundability could not be determined due to non-availability of data, the study shows that in 1977 and 1991/92 the index of postpartum infecundability had the highest fertility-reducing effect in Lesotho. Moreover, the effect of sterility and abortion on fertility decline in Lesotho was found to be small. However, further research needs to address these factors as their effect could be masked by non-availability of data. It seems that further decline in fertility in Lesotho will be a result of an increase in contraceptive use and age at marriage. To promote these two the government should: 1) show a strong commitment both politically and financially, to limiting population growth through family planning 2) expand women's educational and economic opportunities. / Thesis (M.A.)-University of Natal, Durban, 2003.

Photocopy of typescript. / Thesis (Ph. D.)--University of Hawaii at Manoa, 1979. / Bibliography: leaves 145-149. / Microfiche. / ix, 149 leaves 29 cm

Thesis (M.A. (Population and Reproductive Health Research))--Mahidol University, 1999.

Thesis (M.A. (Population and Reproductive Health Research))--Mahidol University, 2006. / LICL has E-Thesis 0016 ; please contact computer services.

Thesis (Ph. D.)--University of Michigan, 1998. / Includes bibliographical references (leaves 122-137).