• Journal of Families and Better Life
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• v.28 no.6
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• pp.59-69
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• 2010

This study is to understand the determinants affecting women's fertility behavior (additional fertility plan) using the Korean Longitudinal Survey of Women & Families of 2007. Patterns of married women's life courses are divided into five groups depending on family role and economic activity: family-centered (no work experience) type, latent M type, M type, work-family reconciliation type, and first job entry type. This study performs a binomial logistic regression analysis and the key findings from the study are summarized as follows. First, five distinctive patterns show the different composition: family-centered type (4.5%), latent M type (69.6%), M type (10.4%), work-family reconciliation type (7.4%), and first job entry type (8.1%). Second, socio-economic characteristics, husband characteristics, and value characteristics are statistically significant to additional fertility behavior ; however, institutional character is not significant. Finally, significant factors affecting additional fertility plans vary in different patterns of life courses. Based on these results, this study suggests some policy implications and future research directions.

• Korea journal of population studies
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• v.11 no.1
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• pp.97-116
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• 1988

This study examines the socioeconomic determinants of fertility behavior in Korea by developing a model which simultaneously takes into account both individual and community-level differences. It especially focuses on the micro-macro nexus of fertility behavior depending on social contexts. This study utilizes micro data obtained from the 1974 Korean National Fertility Survey(KNFS), and macro data obtained from Korean government statistics. The framework of the model is formalized as a set of structural equations modelling the fertility process. The model is formed on a cohort-specific processual basis and is restricted to five-year birth cohorts. Three cohorts of women are studied : those aged 30-34, 35-39, and 40-44. The model includes three fertility-process components : age at first birth, early fertility, and later fertility, which are defined by reference to the age of the mother. The results of this study indicate that socioeconomic development in Korea results in increased age at first birth and reduced numbers of children per couple. In addition to the developmental change, Korea's fertility decline is found to be facilitated by family planning programs. As expected, the effect of family planning on fertility is greater among better-educated women than among poorly educated women. The inconsistent but suggestive result, however, is that the effect of socioeconomic development on fertility is greater among less-privileged women than among more-previleged women.

• Korean Journal of Occupational Health Nursing
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• v.19 no.1
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• pp.41-49
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• 2010

Purpose: This study is a descriptive survey research on factors related to fertility intention of nurses who work in general hospitals, by applying the Theory of Planned Behavior(TPB). Method: The research subjects are 674 nurses at the peak fertility age of 20-39 years old, who work in 4 general hospitals located in Seoul and Gyeonggi province. Result: The mean score of subjects' fertility intention is 3.69 in 5-point scale. The fertility intention was significantly influenced by perceived behavioral control and subjective norm. Conclusion: The results of the study showed that the fertility intention of the nurses in general hospitals was influenced by the TPB variables such as the attitude, perceived behavioral control, and subjective norm. Thus, a comprehensive approach strategy is needed considering these factors.

• Korea journal of population studies
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• v.32 no.1
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• pp.51-70
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• 2009

The main purpose of this study is to examine how individual's ideological factor, the individual perception of the economic situation, and the individual socioeconomic characteristics affect the fertility behavior during the fertility recovery periods-from 2006 to 2007- by each parity. For conducting this study, the 2008 Korean Fertility Survey Data are used. The respondents in this data consist of 1,467 women born their children at 2007 and 1,000 women not having their children at the recovery periods of fertility rates. Findings are as follows. First, the effect of individual's ideological factor, the individual perception of the economic situation, and the individual socioeconomic characteristics on fertility behavior differ by each parity. Second, the government policies increasing the fertility rate are needed to consider not only providing the economic support but also emphasizing the traditional ideology having the positive effects on the fertility behavior in order to increase the fertility rates. Third, the policy decreasing the age at the first marriage is needed.

• Korea journal of population studies
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• v.11 no.1
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• pp.87-96
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• 1988

The subjects used in this study were chosen from self-employed women in Taegu City, Korea, Data for 415 respondents were collected by face-to-face interviews conducted during the period of November 10 through 23, 1987. There are three major purposes in this study : first, to describe the general characteristics of self-employed Korean women's fertility behavior ; second, to examine the determinants of fertility behavior among self-employed women : third, to explore the relative importance of the fertility determinants among the women. Regression analyses were introduced to test hypotheses. Nine variables, such as household income, educational attainment, mass media, abortion, the period of contraception practice, contraceptive expenses, the number of infant, deaths marital period, and age at first marriage were introduced as indicators in the regression. The results of this study show that there are negative relationships between the dependent variable of fertility and abortion, and the period of contraception practice. On the other hand, positive relationships between the dependent variable of fertility and the number of infant deaths, and marital period and age at first marriage are shown in this study. However, the results of this study show that there are insignificant relationships between socioeconomic variables and fertility. From the results of the F test to evaluate the significance of difference in $R^2$between two different regression equations, we have found that the regression equation including both socioeconomic variables and intermediate variables is misspecified to examine the determinants of fertility behavior among self-employed Korean women. That is, the F test shows that the regression equation including only intermediate variables as indicators is the best model for this study. Finally, the relative importance of the fertility determinants among self-employed women is found as follows : Age at the first marriage is the most influential variable in the fertility, and the next important factors are abortion, the period of contraception practice, the number of infant deaths, and marital period, in that order.

• Korea journal of population studies
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• v.30 no.2
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• pp.97-116
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• 2007

As the fertility level in Korea continues to drop with detrimental implications for the society, it has regained much attention of academics and policy makers. This study, building on the previous research on fertility behavior, attempts to explore the plan of young married women to have an additional child. While such plan is not always put into practice, it is still closely related to fertility behavior. In addition, it can provide useful clues to understanding behavior in the future. Utilizing a recent nationwide survey on marriage and fertility, the study analyzes the plan of further birth among young married women according to the number of their children. The results show that the plan for first child is quite universal as no difference is found by their socioeconomic and demographic characteristics. However, having plan for second child differs by the work status of husbands, presence of mother of young married women, and the sex of first child. The effects of first two factors suggest that young married women take into consideration stability of home economics and availability of care sharing. As for the plan for the child, the present and ideal sex composition of children appear most important. The results indicate that the mechanism of fertility progression differs by the current number of children. Thus, consideration of such differential would help us deepen our understanding of fertility behaviors and need to reflect in the study. The study also argues that comprehensive and systematic qualitative research should be accompanied by to capture complexity of fertility decision making process.

• Journal of Industrial Convergence
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• v.20 no.5
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• pp.93-100
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• 2022

This study is a descriptive survey study that applies the planned behavior theory to identify the factors influencing the childbirth intention of unmarried men and women. Data were collected from April 05 to April 23, 2021 for 168 unmarried men and women. As a result of the study, in general characteristics, male, old, highly educated, occupational, and non-regular workers had statistically significantly higher childbirth intentions. As a result of examining the correlation between the variables constituting the theory of planned behavior(TPB), it was found that the more positive the attitude toward childbirth, the greater the subjective norm, and the greater the perceived behavior control, the higher the intention to give birth. Multiple regression analyses showed that the factors affecting fertility intention on men and women. The factors affecting fertility intention in men was attitude, with an explanatory power of 62.2% and the factors affecting fertility intention in women were attitudes and perceived behavioral control, and the explanatory power of these variables on fertility intention was 69.0%. In order to increase the intention to give birth, a comprehensive approach is needed, and the research is meaningful in that the results of this study provided basic data in the development of policies and education programs related to low birth rates in the future.

• Korean Journal of Childcare and Education
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• v.16 no.6
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• pp.19-34
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• 2020

Objective: This study investigated the effects of the firstborn's gender and temperament on the fertility intention and follow-up childbirth of parents. Methods: A total 120 firstborns and their mothers were selected from the sample of the Panel Study on Korean Children. Child temperament traits were measured by Early Childhood Behavior Questionnaire(ECBQ) and mothers stated their fertility intention in 2009 when their first child was under 2 years old. Follow-up childbirth of mothers was assessed from the data of PSKC in 2016. Results: The results indicated that there was a significant difference by gender in follow-up birth. Among aspects of temperament, fertility intention was affected by the firstborn's inhibitory control and follow-up birth was affected by the firstborn's gender and discomfort. For mothers with a boy, the firstborn's soothability affected mothers' follow-up childbirth. Conclusion/Implications: These results imply that gender and temperament of the first child are connected to mothers' fertility intention and follow-up childbirth. Extra studies are required to clarify how those factors affect mothers' parenting or psychological status. Meanwhile, the firstborn's gender and temperament should be considered when developing support programs for families with one child in order to increase follow-up birth rate.

• Korea journal of population studies
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• v.29 no.3
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• pp.111-137
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• 2006

The purpose of this study is to analyze how to change the fertility behavior at each parity after/before the economic crisis, and to find its significant determinants. The study assumes that because the socioeconomic changes have significant effects on the individual's fertility behavior, the individual's fertility behaviors and the determinants affecting fertility at each parity may change with economic crisis. Such assumption has been proven in this study. After the economic crisis, Korean fertility behavior at each parity has changed. The proportion of women having no child has increased. However, women who want to have a second child or a third one are more likely to do so within shorter period after marriage. The rectangularization of fertility has appeared after the economic crisis, because women married at later ages tends to finish their child bearing within the short period, especially before age 35. Based on the multiple variable analysis, the determinants affecting the fertility behavior have changed after the economic crisis. Interestingly, the men's safety job have the positive effects on the first childbearing while the women's safety careers have the negative effects on it, after the economic crisis. Before the economic crisis, both do not have significant effects on the first childbearing. This findings point out the limitation of women career favor policy, which purpose to raise the fertility rates by making good environments for women having children to work comfortably without the anxiety of child care.

• YAKHAK HOEJI
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• v.45 no.2
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• pp.190-204
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• 2001

This study was conducted to investigate for its effects on reproductive and developmental toxicity of recombinant human epidermal growth factor (rhEGF) in Sprague-Dawley rats. Male rats were administered rhEGF at doses of 1, 10, 100, and 1000$\mu$g/kg/day, respective1y, by subcutaneous injection from 63 days before and throughout to mating period until the day before sacrifice. Female rats were administered rhEGF at the same doses from 14 days before mating to day 20 of gestation or to day 21 of lactation. We examined the male and female fertility indices and maternal toxicity of F0 parental animals. Also, we examined the external, visceral, or skeletal malformation of fetuses, growth and development, behavior, and/or reproductive performance of F1 animals. At the highest dose (1,000 $\mu$g/kg), the mean body weights of F0 animals were significantly increased in males and females at 3 or 2 weeks after treatment, respective1y. No clinical signs and food intakes were observed at any time during the experimental period by rhEGF treatment. In autopsy examination, the relative and absolute liver weights significantly increased in both sexes of 1,000 $\mu$g/kg. At the highest dose (1,000 $\mu$g/kg), there was a statistically significant increase of pregnancy period and the number of dead fetuses. Moreover, significant increase of mean fetal body weight and decrease of number of live fetuses, which related to the difficult dilivery were observed in highest dose group. In Fl examination, no adverse effects on external, visceral, and skeletal malformation, physical and functional development, behavior or reproductive ability of Fl animals were observed in any group. Also, there was no significant difference between control and treated groups in copulation or fertility indices of Fl animals. These results indicate that rhEGF had no adverse effect on fertility and reproductive ability of Sprague-Dawley rats.