bluuebunny/crossref_metadata_2025_split huggingface dataset:
Infant and child mortality in Pakistan—some trends and differentials
Authors: Sathar Zeba A. 
Published: July 2008

SummaryData from reproductive histories collected in the Population, Labour Force and Migration Survey of 1979 are used to analyse trends and differentials in infant and child mortality in Pakistan. Comparisons with the Pakistan Fertility Survey findings are also presented. Whereas levels differ substantially across the two surveys, trends and differentials are generally similar. Infant–child mortality seems to have declined until the mid-1960s, stabilized for some years and even risen slightly in the latest period of the two surveys.Neonatal mortality is responsible for a high proportion of deaths under age 1 and is particularly high for first order births and children born to very young or very old mothers. Higher infant and childhood mortality are also related to these factors and also to a shorter preceding birth interval, the early death of the preceding child and sex of the child. Education of mother and residence were also found to be critical determinants of infant and child mortality.
Visual acuity of the Gidra in lowland Papua New Guinea
Authors: Kawabe T. , Ohtsuka R. , Inaoka T. , Akimichi T. , Suzuki T. 
Published: July 2008

SummaryVisual acuity was tested and the anterior portion of the eye inspected among the Gidra in Lowland Papua New Guinea, who depend on hunting for their animal food. The visual acuity of the youths and adults was as high as that of hunters and gatherers; 88% of the males and 81% of the females had an acuity of 1·2 or better. The elders had far lower acuity, correlated with the advance of cataract (or corneal opacity). The senescent visual acuity is discussed in relation to little practice and low productivity of the elders' hunting, and to the Gidra traditional age-grade system.
Intelligence test performance in obesity in relation to educational attainment and parental Social Class
Authors: Sørensen T. I. A. , Sonne-Holm S. 
Published: July 2008

SummaryIn the population of 242,633 draftees examined in the Copenhagen area for the period 1956–77, 1143 were extremely overweight. Compared to 2123 controls, selected at random from the remaining draftee population, the obese had a lower educational attainment, even at each level of intelligence test score. Conversely, at each educational level, the obese did not differ from the controls in intelligence test score. When taking into account, by regression analysis, both intelligence test score and parental social class, the chance for the obese of exceeding the educational level of minimum years of schooling followed by elementary trade training increased from 37% to only 52% of that for the controls. The results suggest that obesity, irrespective of social origin, is associated with poor educational attainment which may be responsible for the cognitive deficiency manifested in lower intelligence test scores.
A genetic isolate in the French Pyrenees: probabilities of origin of genes and inbreeding
Authors: Serre Jean Louis , Jakobi Lucienne , Babron Marie-claude 
Published: July 2008

SummaryThe genetic structure and its recent evolution in a small isolated village in the French Pyrenees, Arthez-d'Asson, have been characterized by calculating the probabilities of origin of genes and inbreeding values at every generation since the 17th century.Arthez-d'Asson appears to be one of the most inbred populations in France, with an inbreeding coefficient of approximately 0·5%. This is due first to genetical and cultural isolation, and secondly to migration out of the village towards towns at the turn of the century. The valley of Ouzom, in which Arthez-d'Asson lies, constitutes a hierarchical population and some cultural and genetical turnover is drawing back to the valley genes which have been absent for some generations.
Son preference and its effects on Korean lactation practices
Authors: Nemeth Roger J. , Bowling J. Michael 
Published: July 2008

SummaryUsing retrospective data from Korea, multi-variate log-linear analyses indicate that the sex of a child influences the probability of it being breast-fed. Even for women with a living son, there are greater than average odds that they will not breast-feed an infant girl. The sex of the child did not, however, influence the number of months he/she was breast-fed.
Nutritional status and age at secondary sterility in rural Bangladesh
Authors: Karim Abdul , Chowdhury A. K. M. Alauddin , Kabir M. 
Published: July 2008

SummaryIn a prospective study of 2324 women in Matlab, Bangladesh, the occurrence of primary and secondary sterility by age groups was examined. The results were related to the nutritional status of the women, as assessed by measurements of height, weight, arm circumference and ponderal index. There is evidence that nutritional status is an important factor in estimated age at sterility, with thinner women experiencing a slightly earlier menopause.
Attitudes of women of reproductive age to in vitro fertilization and embryo research
Authors: Alder Elizabeth M. , Baird David T. , Lees Martin M. , Lincoln Dennis W. , Loudon Nancy B. , Templeton Allan A. 
Published: July 2008

SummaryThe attitudes of women of reproductive age to IVF therapy and human embryo research were investigated. A questionnaire was given to 1920 consecutive women attending clinics for family planning (1050), ante-natal care (705) and infertility (165). This paper reports the analysis of 1701 returned questionnaires, all from women of reproductive age. The great majority (94%) were in favour of IVF treatment. Sixty-seven percent approved of research on human embryos up to 14 days to improve IVF treatment, and a further 10% supported research on embryos designed to avoid birth defects. The majority (79%) thought women should be allowed to donate ova for research. The social characteristics of the infertility group were similar to those of the ante-natal group except for lower parity. In the family planning and ante-natal groups attitudes were not related to age, social class or parity, but were influenced by religious beliefs.
Who has a vasectomy reversal?
Authors: Clarke Lynda , Gregson Sue 
Published: July 2008

SummaryThe characteristics of the first 200 cases of vasectomy reversal have been analysed. The mean time from vasectomy to reversal was 4.8 years. It varied according to the reason for requesting reversal, and was particularly short when the operation had been performed at the time of the partner's pregnancy. Thirty percent of the men were with the same partner and 70% a new partner. Vasectomy reversal cases tended to be younger than vasectomy patients as a whole but did not differ significantly in social class. In this series of reversals, spermatozoa were present in the ejaculate throughout the 20-week follow-up time in 80% of the men; the pregnancy rate was 44%.
Side effects and discontinuation of oral contraceptive use in southern Brazil
Authors: Janowitz Barbara , Kane Thomas T. , Arruda Jose Maria , Covington Deborah L. , Morris Leo 
Published: July 2008

SummaryThe subsequent contraceptive behaviour following reported side effects in users of oral contraceptives in the southern region of Brazil is examined in relation to discontinuation of pill use, changing to other methods, termination of contraceptive use, the role of the physician in influencing a woman's decision to discontinue pill use, and discontinuation according to the type of problem experienced.In 2904 currently married women, aged 15–44, almost 75% reported that they had used the pill at some time, and of these 45.6% were still doing so. Women who reported problems with the pill were less likely to be current users (25%) than the women who did not (65%). However, overall contraceptive prevalence was about the same in both groups. Women who stop using oral contraceptives are more likely to be using traditional methods than women in the general population, especially if they want more children. Termination of pill use varies little according to the type of problem reported. Women with problems who sought medical attention were more likely to stop using the pill and so were women advised to stop by their physician, but the major factor affecting discontinuation was the reported experience of a problem.
Seasonality of conception in hutterite colonies of Europe (1758–1881) and North America (1858–1964)
Authors: Surbey Michele K. , Catanzaro Denys De , Smith Martin S. 
Published: July 2008

SummaryBirth records of Hutterite colonies were examined for the presence of seasonal variation in conception rate. Month of conception was inferred by counting back 9 months from date of birth. Over 4300 births, occurring between 1758 and 1964 and spanning the years that the colonies inhabited the Ukraine and then migrated to the United States and Canada, were included in the analysis. When combined, the European and North American births showed a seasonal pattern with a general rise in conceptions from December to June followed by a decline in conceptions from July to November. The major peaks in conceptions were in April and June, with a minor peak in December. Separate examination of the European and American records revealed a secular change. The seasonality of North American conceptions was dramatically reduced when compared to the very distinct European seasonal pattern. It is assumed that both biological and cultural factors are responsible for the seasonal variation observed. The influences of light cycle, date of marriage, and work and holiday schedules on conception rates are discussed.
Estimation of adult mortality in Korea: levels, trends, and socioeconomic differentials
Authors: Kim Ock-Kyung 
Published: July 2008

SummaryData from the 1974 Korean National Fertility Survey indicate levels, trends, and socioeconomic differentials in adult mortality in the Republic of Korea. The indirect techniques of parental survival and the time location of mortality are used to estimate mortality levels and to discern time trends in adult mortality. Socioeconomic variables are considered for their relationship with levels of adult mortality. The index of household wealth (based on the ownership of modern goods, size and space of household) and education stand out as the most important differentials in adult mortality. The trend in mortality decline is most pronounced for the subgroups representing higher levels of educational attainment and greater ownership of modern goods even after adjusting for the interrelationship between these two variables.
Measures of family size preferences
Authors: Barrett J. C. 
Published: July 2008

SummaryEstimates of preferred family sizes are derived from those achieved at various durations of marriage, using a Monte Carlo simulation model of reproductive histories, slightly modified in its representation of breast-feeding. The method of estimation consists in inverting the relationship between these two distributions (wanted and achieved births) which form respectively an input to and an output of the model. The increasing preference for families of two children is shown in cohorts married in England and Wales in 1951, 1956, 1961, 1966 and 1971 for women's ages at marriage 20–24 and 25–29. Sensitivity to assumptions regarding contraceptive effectiveness is tested, and ranges established for estimates. The evolution and stability of family size preferences are discussed.
Patterns of Depo-Provera use in a large family planning clinic in the United States
Authors: Higgins James E. , Chi I-Cheng , Wilkens Lynne R. , Hatcher Robert A. 
Published: July 2008

SummaryDepot medroxyprogesterone acetate (DMPA) was approved as an investigational new drug for contraceptive use in the United States between 1967 and 1978. Patterns of contraceptive choice and changing methods were determined among 36,298 women attending a family planning clinic between 1967 and 1976. This population was the largest concentration of US women who had DMPA available as a contraceptive option. By 1974, women in the age group 35–49 were as likely to choose DMPA as either oral contraception or an intrauterine device. Coincidentally, use of the most popular choice, oral contraception, declined in older women and IUD use dropped sharply in all age groups. On average, users of DMPA were more likely to continue their method than were users of IUDs or barrier methods. Among women in the 35–49 age group, DMPA users were the group least likely to change methods.
A decade of fertility below replacement level in Singapore
Authors: Saw Swee-Hock 
Published: July 2008

SummaryThis paper discusses fertility trends in Singapore during the decade 1975–84. Fertility first dropped below the replacement level in 1975 when the gross reproduction rate reached 1·006, and fell further to the low of 0·772 in 1984. During the same period all of the three main races, Chinese, Malays and Indians, experienced fertility below replacement level. The shortfall in the number of births required to ensure replacement fertility increased during the decade until it approached one-quarter in 1984.
Effect of birth spacing on infant and child mortality in rural Nepal
Authors: Gubhaju Bhakta B. 
Published: July 2008

SummaryThis examination of the effect of birth spacing on infant and child mortality in rural Nepal is based on data from the Nepal Fertility Survey 1976 carried out by the Nepal Family Planning and Maternal Child Health Project in collaboration with the World Fertility Survey. The study confirms that the higher risk of infant death to first-born children is mainly due to the higher proportions of younger women having first births, rather than due to their being first order births per se. The effect of maternal age on infant and child mortality is largely associated with birth interval. Previous birth interval, therefore, stands out as the most important factor affecting infant mortality; the next most important factor is the survival of the preceding child.
Seasonal variation in suicide rates by cause and sex
Authors: Araki S. , Aono H. , Murata K. , Shikata I. , Mitsukuni Y. 
Published: July 2008

SummarySeasonal variations in cause- and age-specific suicide rates in males and females were analysed in Osaka, Japan, for the years 1974–83, using profile analysis. Significant cause differences were found in males: (1) the rate for poisoning by domestic, car-exhaust or other gases was high in winter and spring and low in summer and autumn; (2) the rate for hanging, strangulation and suffocation was low in winter; (3) the rate for a variety of violent methods (chemicals, firearms, drowning, etc.) was high in summer. Similarly, there were sex differences in the variation for causes (2) and (3) and for ages 40–54. No significant age difference was found in either sex. Seasonal differences in the ease of suicidal methods and sex- and season-specific psychosocial factors were thought to be the major determinant of the seasonal variation.
Single women, voluntary childlessness and perceptions about life and marriage
Authors: Callan Victor J. 
Published: July 2008

SummaryForty-two single women who want to be childless, eighteen who desire a one child family, and 42 who want two children responded to questions about the quality of their present lives, and nature of future marriages. The groups of women were closely matched for age and education, and on current quality of life there were few differences. They had similar levels of positive and negative affect, and described life as enjoyable, interesting and contented. Those wanting to be childless, however, rated life as less optimistic and less loving, and also as currently somewhat less satisfying, but life satisfaction was still quite high. These early deciders of childlessness, and those wanting only one child, wanted to be financially and socially more independent in future marriage-type relationships than women wanting at least two children. They also expected to follow interests and careers to their fullest, wanted more role innovative partners, and were somewhat less concerned about home ownership, living to a budget, and keeping contact with family and friends. All women placed considerable importance on the need for trust, self-disclosure and open communication in a relationship, although the voluntarily childless rated more highly the need for intellectual stimulation and for each partner to be happy about the success of their mate. Compared to women wanting two children, those wanting to be childless expected a partner to perform a wide range of non-traditional roles in the home.
Differentials of fertility between polygynous and monogamous marriages in rural Bangladesh
Authors: Shaikh Kashem , Aziz K. M. A. , Chowdhury A. I. 
Published: July 2008

SummaryThis paper discusses polygynous marriages in rural Bangladesh, using marital status and birth registration data from the Demographic Surveillance System of the International Centre for Diarrhoeal Disease Research, for the period 1975–79. Of all the marriages recorded during this period about 5% were polygynous. To identify the women polygynously married, 1974 census data of the DSS area were used. The difference in age at marriage between the polygynous groom and his subsequent wife was 15 years on average. The socioeconomic indicators studied were education, occupation and area of dwelling space. In general, these indicators differentially influence polygynous marriage. The fertility differentials between women in monogamous marriages were significantly higher than between the women in polygynous unions.
Regional variation in the age-specific natural fertility curve
Authors: Robinson Warren C. 
Published: July 2008

SummaryThis paper examines the question of whether there are consistent regional variations in the level and shape of the age-specific natural fertility curve using data for 45 less-developed countries drawn from a recent US Census Bureau compilation. In general there do not appear to be such variations. A remarkably consistent age pattern of natural fertility emerges, once the rates have been normalized and an adjustment made for age at first exposure to the risk of pregnancy. The results strongly support Coale's original natural fertility paradigm.
Cessation of childbearing in the absence of contraception in Sri Lanka
Authors: Gajanayake Indra 
Published: July 2008

SummaryIn data from the Sri Lanka Fertility Survey, 1975, the cessation of childbearing is examined among women who have never used contraception. They tend to cease childbearing relatively early, and therefore are infertile for longer periods during their marriages. It is probably age of the first child that influences decisions on future fertility.
The relative rate of maturation and its psychological effect
Authors: Goodson Cheryl Sorenson , Jamison Paul L. 
Published: July 2008

SummaryGrowth and psychological data for 74 participants in the Fels Longitudinal Study are analysed to determine the influence of the relative timing of maturation upon psychological attributes related to interests, abilities, self-confidence, peer relationships, and future goals. It is suggested that neither age at peak height velocity for either sex, nor age of menarche for girls, represents an adequate measurement of relative maturity status. A new variable that can be used for both sexes, relative maturity, is suggested and computed using peak height velocity as well as the additional information gained from the percentage of adult stature achieved at that time.Results of separate significance tests using peak height velocity and relative maturity as independent variables reveal early maturers to be more self-confident in specific abilities and also more gregarious during adolescence with higher educational and vocational expectations for the future, while the later maturer is less likely to be influenced by his peers and to have less ambitious long-range goals.
Child mortality and society in Morocco
Authors: Crognier E. 
Published: July 2008

SummaryMultivariate (correspondence) analysis is employed to identify socioeconomic factors affecting fertility and infant mortality in Marrakesh (Morocco), using questionnaire data from some 3000 women attending 20 dispensaries in different parts of the city. Factors of the material environment (availability of water and electricity in the residence), size of household and number of wage earners in it are pervasive and suggest a polarity between archaic elements in the society (low material comfort, polygyny, absence of contraception) and the more forward looking (monogamy, tertiary occupations). Fertility and child mortality variations reflect this polarity. The differences that occur among the 20 dispensaries direct attention to the neighbourhoods where public health measures may be expected to be most effective and rewarding.
Return of fertility in lactating and non-lactating women
Authors: Zacharias Sergio , Aguilera Eneida , Assenzo J. Robert , Zanartu Juan 
Published: July 2008

SummaryThe return of fertility post-partum and the incidence of pregnancy were studied in 74 mothers who chose not to breast-feed and who wanted another pregnancy promptly (Group I) and 143 mothers who practised exclusive lactation and decided not to use contraceptives (Group II). Women who breast-fed had much lower pregnancy rates than those who did not. During the first 6 months of the study, there were 53 (72%) pregnancies among the Group I women and no pregnancies among Group II mothers. Only sixteen (11%) women in Group II discontinued the study because of inadequate milk secretion. The low rate of pregnancy and the low rates of inadequate milk secretion in Group II appear related to the special efforts made to promote breast-feeding and give proper instruction to the mothers in this group. The successful lactation is attributed to a high suckling frequency, night feedings, ample mother and child skin-to-skin contact, avoidance of bottle feeding for as long as possible, and the clinical staff's regular emotional support and encouragement to the nursing mother.
Suckling patterns and post-partum amenorrhoea in Bangladesh
Authors: Huffman Sandra L. , Chowdhury Alauddin , Allen Hubert , Nahar Luftun 
Published: July 2008

SummaryThe association between breast-feeding patterns and resumption of menses post-partum was examined in a longitudinal study initiated in March 1976 in Bangladesh. Information on suckling patterns and menstrual status was collected on 148 breast-feeding women who were still amenorrhoeic at 17–25 months post-partum at the beginning of the study. Suckling was measured during an 8-hr period once a month for up to 19 months of follow-up.A high frequency of suckling was found, even at this late post-partum duration. Total suckling time and the number of suckling episodes declined with the age of the child but the mean duration of each episode did not change. The fact that regression analyses did not show a correlation between suckling patterns and return of menses post-partum may be related to the large individual variations in suckling patterns and in the duration of amenorrhoea in this population, and the need to study suckling patterns for longer than 8 hr per day.