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Biomedical subjects

M K Choe

Publications and source records attributed to M K Choe.

At least 19 recordsLinked to original sources
PubMed2001

Risk-taking behavior among high school students in South Korea.

In a national sample of high school students, 43 per cent had drunk regularly, 32 per cent had smoked regularly, and 11 per cent had experienced sexual intercourse. Boys were more likely to have experienced these behaviors than girls. Going to school in Seoul, not having two parents in the family, and having an experience of living away from immediate family were associated with higher livelihood of experiencing these behaviors. Students who had friends with sexual experiences were much more likely to experience sex themselves than those without.

Adolescent↗
PubMed1997

A mixture model for duration data: analysis of second births in China.

In this paper we introduce a mixture model in which we combine logistic regression and piecewise proportional hazards models for analysis of duration data. The model allows simultaneous estimation of two sets of effects of covariates: one of the probability of an event and the other of the timing of the event. We illustrate the application of the model through an analysis of the effects of women's characteristics and of the acceptance of a one-child certificate on the birth of second children in China. Both factors affect the probability of having a second child, but only the acceptance of a one-child certificate has a significant and strong effect on the second-birth interval.

Algorithms↗
PubMed1990

Effect on famine on child survival in Matlab, Bangladesh.

"This paper examines how the level of child mortality and rate of out-migration, and their covariates were affected during the 1974 famine and the periods immediately following the famine in Bangladesh." The authors examine several variables affecting mortality and out-migration, including socioeconomic status, sex factors, age factors, educational status, and religion. Data are from the Matlab Demographic Surveillance System.

Age Factors↗
PubMed1989

Ethnic differentials in early childhood mortality in Nepal.

This paper investigates the association of early childhood mortality (between birth and second birthday) with ethnicity in Nepal, based on data from the 1976 Nepal Fertility Survey, which was part of the World Fertility Survey. The approach is through a series of hazard models, which incorporate ethnicity, year of birth, mother's illiteracy, father's illiteracy, rural-urban residence, region, sex, maternal age, survival of previous birth, previous birth interval, and breast-feeding as covariates. Ethnic differentials in early childhood mortality are not explained by the other socioeconomic and demographic covariates, except for a modest effect of illiteracy, but the remaining covariates explain a great deal of variability in early childhood mortality itself. Analysis using an improved specification of breast-feeding as an age-varying covariate indicates, on average, that breast-feeding, relative to not breast-feeding, reduces age-specific mortality risks during the first 2 years of life by 76%, a very large effect.

Adolescent↗
PubMed1989

Contraceptive method choice in the Philippines, 1973-83.

Contraceptive use and method mix were analysed using Philippines national survey data of 1973, 1978, and 1983. The analyses suggest that the reported decline in contraceptive prevalence between 1978 and 1983 was due to under-reporting of use in 1973 and 1983. The shifts in contraceptive method mix were also partly from under-reporting of rhythm and other methods in 1973 and 1983. Nevertheless, the determinants of method choice were similar in all three sets of data. Filipino couples were making rational choices in terms of their contraceptive goals, access, evaluation, and competence. Modifications in the directions and magnitude of the relationships in determining method choice also occurred, partly reflecting the increased use of sterilization by older, higher parity women.

Adult↗
PubMed1989

Labor force participation of married women in contemporary Korea.

"This paper presents some results from the 1986 Family Life Survey of Korea. This survey was the first that was conducted in Korea with the specific purpose of understanding women's life cycle beyond marriage and fertility....A probability sample of 3,400 households representing the whole country were selected, [including] interviews of ever-married women of ages 15 to 64.... The survey collected information on household composition, with basic characteristics of members of household including health status....marriage history, including how husbands were selected, pregnancy history including the age of children when they first left home and reason for leaving home, contraceptive use, health, and women's employment at different stages of life." (SUMMARY IN KOR)

Age Factors↗
PubMed1989

To what extent does breastfeeding explain birth-interval effects on early childhood mortality?

This article shows that in Nepal breastfeeding almost completely explains the effects of following birth interval on childhood mortality during the first 18 months of age and partially explains the effect of following birth interval on childhood mortality between 18 and 60 months of age. Breastfeeding does not explain the effect of preceding birth interval on childhood mortality. The analysis is based on application of hazard models to data from the 1976 Nepal Fertility Survey.

Birth Intervals↗
PubMed1979

The effect of infant death on subsequent fertility in Korea and the role of family planning.

This paper studies the effect of infant death on subsequent fertility in a developing country, examining spacing of children and additional births following the survival or death of the preceding infant. The material is provided by the 1971 National Fertility Survey of Korea, 23,635 retrospective birth records of 6,285 women. The findings suggest that prior to the introduction of a national family planning program, the influence of infant death was limited to the biological effect resulting from a shortened lactational period. Since fertility regulation methods have been made available throughout the country, motivational effects to replace the lost child appeared to emerge. The proportion of excess births attributable to infant deaths has increased in recent years. However, because of the lowered infant mortality, the overall impact of infant death on the national fertility level appears to be small.

Adult↗