• 여성건강간호학회지
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• 제28권4호
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• pp.348-357
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• 2022

Purpose: This study aimed to identify maternal, infant, and perinatal mortality using the national population data of South Korea between 2018 and 2020, and to analyze mortality rates according to characteristics such as age, date of death, and cause of death in each group. This study updates the most recent study using 2009 to 2017 data. Methods: Analyses of maternal, infant, and perinatal mortality were done with data identified through the supplementary investigation system for cases of death from the Census of Population Dynamics data provided by Statistics Korea from 2018 to 2020. Results: Between 2018 and 2020, a total of 99 maternal deaths, 2,427 infant deaths, and 2,408 perinatal deaths were identified from 901,835 live births. The maternal mortality ratio was 11.3 deaths per 100,000 live births in 2018; it decreased to 9.9 in 2019 but increased again to 11.8 in 2020. The maternal mortality ratio increased steeply in women over the age of 40 years. An increasing trend in the maternal mortality ratio was found for complications related to the puerperium and hypertensive disorders. Both infant and perinatal mortality continued to decrease, from 2.8 deaths per 1,000 live births in 2018 to 2.5 in 2020 and from 2.8 in 2018 to 2.5 in 2020, respectively. Conclusion: Overall, the maternal, infant, and perinatal mortality statistics showed improvements. However, more attention should be paid to women over 40 years of age and specific causes of maternal deaths, which should be taken into account in Korea's maternal and child health policies.

• Asian-Australasian Journal of Animal Sciences
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• 제11권4호
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• pp.441-444
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• 1998

The negative direct-maternal genetic correlation $(r_{dm})$ for weaning weight is inflated when data are analyzed with model ignoring sire-by-year interactions (SY). An analytical study investigating the consequences of ignoring SY was undertaken. The inflation of negative correlation could be due to a functional relationship of design matrices for additive direct and maternal genetic effects to that for sire effects within which SY effects were nested. It was proven that the maternal genetic variance was inflated by the amount of reduction for sire variance; the direct genetic variance was inflated by four times the change for maternal genetic variance; and the direct-maternal genetic covariance was deflated by twice the change for maternal genetic variance. The findings were agreed to the results in previous studies.

• 아동학회지
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• 제30권2호
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• pp.97-112
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• 2009

This study examined pathways from maternal parenting behavior to adolescents' internet addiction through both self-control and depression/anxiety. Participants were 449 $8^{th}$ and $9^{th}$ graders in Seoul. They completed questionnaires on maternal parenting behavior, adolescents' self-control, depression/anxiety, and internet addiction. Data were analyzed by structural equation modeling. Maternal parenting behavior indirectly influenced adolescents' internet addiction through self-control and depression/anxiety. Self-control and depression/anxiety individually mediated between maternal parenting behavior and internet addition. However, maternal parenting behavior didn't directly affect adolescents' internet addiction. Self-control was influenced by maternal parenting behavior and also played a crucial role in preventing adolescents' internet addiction.

• 아동학회지
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• 제26권3호
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• pp.43-59
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• 2005

A sample of 578 adolescents responded to self-report questionnaires. Results showed that parental education levels and occupation and adolescent perceptions of their socioeconomic status were positively related to maternal expectations. Adolescent perceptions of their socioeconomic status were related to maternal emotional support and adolescent self-esteem. Adolescent achievement motives were positively related to parental education levels and adolescent perceptions of their socioeconomic status. Maternal expectations/emotional support and adolescent perceptions of their socioeconomic status were positively related to adolescent achievement motivation. Maternal expectations played a mediating role between parental educational levels and adolescent perceptions of their socioeconomic status and adolescent achievement motives. Maternal emotional support and adolescent self-esteem played mediating roles between adolescent perceptions of their socioeconomic status and achievement motives.

• Clinical and Experimental Reproductive Medicine
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• 제41권2호
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• pp.47-61
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• 2014

Stored maternal factors in oocytes regulate oocyte differentiation into embryos during early embryonic development. Before zygotic gene activation (ZGA), these early embryos are mainly dependent on maternal factors for survival, such as macromolecules and subcellular organelles in oocytes. The genes encoding these essential maternal products are referred to as maternal effect genes (MEGs). MEGs accumulate maternal factors during oogenesis and enable ZGA, progression of early embryo development, and the initial establishment of embryonic cell lineages. Disruption of MEGs results in defective embryogenesis. Despite their important functions, only a few mammalian MEGs have been identified. In this review we summarize the roles of known MEGs in mouse fertility, with a particular emphasis on oocytes and early embryonic development. An increased knowledge of the working mechanism of MEGs could ultimately provide a means to regulate oocyte maturation and subsequent early embryonic development.

• 대한가정학회지
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• 제35권2호
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• pp.309-319
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• 1997

The purpose of this study was to examine the maternal separation anxiety depending on the quality of day care and mother's self-esteem. subjects consisted of 187 mothers who had children from 60 t 36 months of age. the instruments used were the questionnaires which consisted of the Maternal separation anxiety scale(Cho and park, 1992), Self-Esteem Inventory(Coopersmith, 1967), and the checklist which consisted of the early childhood environment Rating scale(Harms & Clifford, 1980) and the Family Day Care Rating scale(Harms & Clifford, 1989). The datas were analyzed by the statistical method based o frequency, percentile, t-test, and one-way ANOVA. The main results were as follows : First, there was a significant difference in maternal separation anxiety by mothers' age and not by their educational levels. Second, there were no significant differences in maternal separation anxiety by children's age, sex, and girth order. Third, there was no significant difference in maternal separation anxiety by quality of day 2 care, size of group, and adult-child ratio. Forth, there was a significant differences in maternal separation anxiety by mother's self-esteem.

• 가정과삶의질연구
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• 제25권1호
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• pp.113-125
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• 2007

The purpose of this study is to examine the effect of educational program on maternal child-rearing attitude. The program consisted of 6 sessions, 3-hours weekly meeting per session with 12 mothers who have participated at parent education program. Before and after the program, tests were carried out with child-rearing attitude scale md qualitative research to analyze personal changes of participants. The results of the study were as follows. First, the pre-test and post-test with the maternal child-rearing attitude scale showed some changed recognition that maternal child-rearing attitude would be more affectionate, autonomous and unrejectable. Second, parent education program had positive effect on the maternal self understanding. Participants reported that various tests used for this program helped them to identify themselves. This program also positively influenced maternal children understanding through searching the developmental task and characteristics of children.

• 부모자녀건강학회지
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• 제11권2호
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• pp.93-104
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• 2008

Purpose: The purposes of this descriptive survey study were to describe Maternal-Fetal Interaction aspect according to period of pregnancy. Method: Data were collected from 273 pregnant women who visited one public health center and OBGY clinic in Gangneung city. The instrument used for this study was a self-report questionnaire. Results: During maternal-fetal interaction, there were significant differences in place, feeling, touch type, voice tone, sensitivity according to period of pregnancy. Conclusion: Maternal-fetal interaction aspect according to period of pregnancy is different. Thus, it is essential to develop maternal-fetal interaction program that includes maternal-fetal interaction aspect according to period of pregnancy.

• 아동학회지
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• 제23권3호
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• pp.171-186
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• 2002

This study of variables associated with maternal monitoring of child's whereabouts and daily activities was conducted with 1500 children (8 and 13 years of age) and their mothers. They responded to questionnaires on monitoring knowledge, sources of maternal information (maternal solicitation and/or child disclosure), and demographic variables. Data were analyzed by Pearson's r, ANOVA, and regression analysis. Mothers' knowledge of her child's activities and whereabouts and the sources of her knowledge were associated with mothers' higher level of education. Child's age was related to mother's knowledge and maternal solicitation. Maternal solicitation and child's age were highly predictive of mothers' knowledge of her child's whereabouts and activities. Results of this study may have applications for parental supervision and child rearing attitudes.

• 아동학회지
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• 제36권5호
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• pp.19-36
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• 2015

The purpose of this study was to firstly, investigate the relationship between infants' communicative gestures, play and maternal responsiveness and secondly, to examine the role of maternal responsiveness in the associations between infants' communicative gestures and play. The subjects comprised 42 infants (21 boys and 21 girls) and their mothers. The infants' communicative gestures, the infants' play and maternal responsiveness were observed during free play sessions lasting 20 minutes. The results are as follows. Mothers of girls showed higher levels of responsiveness than the mothers of boys. In addition, here were positive correlations between infants' communicative gestures, play and maternal responsiveness. Maternal responsiveness was observed to moderate the effects of infants' communicative gestures on the infants' average level of play. These results indicate that it is important for caregivers to interpret infants' communicative intentions appropriately and respond promptly and adequately in play situations.