• Imaging Science in Dentistry
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• v.40 no.4
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• pp.159-163
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• 2010

Purpose : This retrospective study was performed to investigate the prevalence of the idiopathic osteosclerosis (IO) in Korean malocclusion patients according to age, sex, and the Angle's classification of malocclusion. Materials and Methods : This study consisted of 2,001 randomly selected patients from the Department of Orthodontics at the Gangneung-Wonju National University Dental Hospital, Korea. The prevalence of IO in Korean malocclusion patients was recorded using their panoramic radiographs, and the following parameters were surveyed; age, sex, and the Angle's classification of malocclusion. The chi-square test was analyzed to determine the statistical significance of differences in the prevalence of IO between age, sex, and the Angle's classification of malocclusion. Results : The prevalence of IO in the jaws was 6.7% in a total of 2,001 examined orthodontic patients. The majority of IO was found in the mandible (96.58%). The 30-39 age group showed the highest prevalence of IO (9.60%). There was a higher prevalence in females (6.89%) than in males (6.45%). The prevalence of IO in Angle Class I group (7.07%) was the most frequent, followed by Angle Class II group (6.72%), and Angle Class III group (6.40%). However, there was no statistical significance in sex and Angle's classification of malocclusion. Conclusion : The prevalence of IO in malocclusion patients showed the differences between various age groups and most of them were found in the mandibular posterior area. However, sex and the type of malocclusion are not to be considered as a contributing factor of IO.

• Research in Community and Public Health Nursing
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• v.13 no.4
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• pp.639-647
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• 2002

Purpose: Sexuality is important for the quality of life in old men, but this issue has been less explored due to social prejudice. Therefore, this study was carried out to describe a correlation between sex life and depression perceived by old men. Method: The subjects were 370 old men who were aged over 60 and lived in a city and three provinces. Instruments used in this study were Perception of Sex life Scale 01 items) and Depression Scale (20 items). The data was collected from December 2001 to February 2002 by written responses of the subjects to the questionnaire as well as one-to-one interview by research assistants for subjects. Statistical analysis for the data was done using SPSS and the level of significance was tested at 95% of confidence interval. Result: 1) Mean age of the subjects was $69.35{\pm}5.70$. A total of 253 subjects (68.6%) had spouse, and 191 of the subjects (52.3%) had sexual intercourse as frequently as 3 times per month. The average score for perception of sex life was $21.25{\pm}5.06$, out of the total score of 44, and that of depression was $35.08{\pm}9.29$ out of the total score of 80. 2) Perception of sex life was statistically significant by age, education, disease, medication, living arrangement, marital status, presence of girlfriend, pattern of inter-coitus, pocket money age of last coitus, subjective health state, and relationship (P<0.05). 3) Depression was statistically significant by age, education, disease. medication, living arrangement, marital status, satisfaction for marriage life, pattern of inter-coitus, feeling for change of sex life, pocket money, subjective health state, and relationship (P<0.05). 4) The correlation between perception of sex life and depression was negative, showing that depression tended to decrease as perception of sex life increases. Conclusion: It is concluded that depression in old men is closely related to their sex life. Positive sex life may have an important effect on the quality of life in old men.

• Archives of Plastic Surgery
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• v.47 no.1
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• pp.9-14
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• 2020

Background Eyelids vary in morphology and structure depending on age, sex, and race. Usually, one-dimensional measurements are used to evaluate blepharoplasty outcomes. However, in recent years, three- or four- directional enlargements of the eyelid have been used for blepharoplasty in Asian patients, and the outcomes of techniques such as lateral canthoplasty or canthotomy and medial epicanthoplasty with increased scleral area cannot be analyzed using marginal reflex distance 1 or the area of corneal exposure. Therefore, we describe the use of a measurement method based on the eyeball exposure area (EEA). Methods To obtain normal EEA values by age and sex, 320 individuals were recruited. The participants were divided into eight age groups (n=40 in each group: female subjects, n=20; male subjects, n=20): 10-19, 20-29, 30-39, 40-49, 50-59, 60-69, 70-79, and 80-89 years. The EEA value was obtained by dividing the exposed area by the total eyeball area. The normal EEA values and differences in EEA according to age and sex were calculated. Results The mean EEA values for male and female subjects were 66.86% ±9.20% and 71.48%±10.48%, respectively. In each age group, the EEA values of females were higher than those of males. EEA decreased significantly with age in both male and female subjects (P<0.05). Conclusions We determined normal EEA values according to age and sex. EEA can be used as an indicator of the outcome of blepharoplasty.

• Journal of the Korean Home Economics Association
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• v.18 no.2
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• pp.23-39
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• 1980

The purpose of this study is to investigate various factors which affect father's child-rearing attitudes through the examination of father-child relationships. In other words, the study aims at finding out how the variables possessed by father side operate on his child-rearing attitudes according to the sex and birth-order of children. Hence, the study is carried out on the hypothesis that father's variables such as age, education, occupation, religion, etc. show different aspects on child-rearing attitudes by way of a child's sex and birth-order. The results of the study show that the factors that affect father's child-rearing attitudes are child's variables such as sex and birth-order as well as father's variables such as education, occupation and religion. describing these factors I detail, the study shows that father has higher concern on daughter rather than on son; the higher education he has, the higher his concern is; and when father has a white-collar job or is a Christian, he shows higher concern on his children. The above mentioned factors are analyzed and classified as follows by the child-rearing contents: A. The factors which affect father's concern one his children are: 1) sex, 2) father's education and 3) occupation related to the sex and birth-order of children. B. The factors which affect father's participation in child-care are; 1) sex, 2) birth-order, 3) father's education, 4) occupation and 5) religion related to the sex and birth-order. C. The factors which affect father's disciplinary attitudes (Praise or scolding) are ; 1) sex, 2) father's education and 3) religion related to the sex and birth-order. C. The factors which affect father's disciplinary attitudes (praise or scolding) are; 1) sex, 2) father's education related to sex, and 3) sex in terms of negative attitudes. E. Finally, father's age is proved to be a factor that does not give any significance in his child-rearing attitudes.

• Korean Journal of Health Education and Promotion
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• v.20 no.2
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• pp.149-162
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• 2003

The purpose of this study was to investigate of the sexual behavior, attitude and knowledge of delinquence adolescents. Data were collected by self-report from 224 delinquence adolescents of the juvenile protection and education organizations in Gwangju city from June 18 to 21, 2002 in Korea. The results were as follows； The concern of subjects on sexual education was pregnancy, delivery and miscarriage(17.4%), date with boy-girl mends(13.9%) and sexually transmitted disease/AIDS(13.1%). The experiences of sexual behavior was masturbation(86.5%), sexual intercourse(79.6%), sexual desire(70.0%) and pregnancy(27.6%). There were statistically significant differences between age and contraception(p＜0.05), age and pregnancy(p＜0.05). The average score for sex attitude was 38.32. The average score for sex knowledge was 7.65. There were statistically significant correlation between sex attitude and sexual intercourse(p＜0.01), sex knowledge and intercourse(p＜0.05), sex knowledge and contraception(p＜0.05), sex attitude and pregnancy (p＜0.05), sex knowledge and sexual desire(p＜0.05). In conclusion, juvenile delinquence adolescents should be educated on sexuality continuously to express there sexual behavior patterns with the right morality and knowledge in any sexual arousal situation.

• Communications for Statistical Applications and Methods
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• v.4 no.1
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• pp.207-218
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• 1997

We consider two models for the growth of population with overlaping generations. First, the model we will describe is basically the model given by Leslie(1945). This is only a one-sex model of population age structure and growth. Next, we introduce a model in which couples must be formed before reproduction occurs. If the maximum number of couples is formed, and if the couples are only formed from fermales of age x-a and males of age x at time t, $\alpha$ > 0. Then, we will solve the renewal equations for the reproductive value.

• Korean Journal of Poultry Science
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• v.7 no.1
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• pp.43-51
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• 1980

This study was carried out to investigate reasonable Period of egg production for incubation and to survey the change of sex ratio with the age as the preliminary work to make breed which can produce progeny in controlled sex ratio. The analyzed data was obtained from the record of incubations during 165-262 hys of age in White Leghorn. The results can be summarized as follows: 1. It was appeared that the fertility and hatchability were increased with the egg produced over 7 months of age. 2. It was tendency that the fertility and hatchability of the flock produced a more female chicken (40% flock) were higher than those of flock produced a more male chicken (60% flock). 3. The variation of sex ratio with the age was wider in 60% flock than in 40% flock 4. 60% flock showed heavier egg weight and body weight, in a while, 40% flock better sexual maturity and hen- housed egg production. 5. There was a negative correlation between sex ratio and henhoused egg production in 60% flock, but 40% flock appeared a positive correlation.

• Korean Journal of Child Studies
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• v.23 no.2
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• pp.121-135
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• 2002

This study compared preadolescent communication skills and quality of peer relationships by institutionalization, sex, and age and tested the correlation between communication skills and quality of peer relationships. The subjects were 98 institutionalized and 115 homereared preadolescents. Interviews measured the communication skills of persuasive, comforting, and listener-adapted abilities. The quality of peer relationships was investigated through questionnaires consisting of both positive and negative factors. The data were analyzed by SPSS. Differences were found between institutionalized and homereared subjects in quality of peer relationships and in communication skills by sex, and age. There was a positive correlation between communication skills and quality of peer relationships.

• Imaging Science in Dentistry
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• v.51 no.1
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• pp.49-54
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• 2021

Purpose: This study was conducted to establish age- and sex-specific reference standards for pterygoid hamulus(PH) dimensions using cone-beam computed tomography (CBCT). Materials and Methods: CBCT scans of 1,000 patients(493 males and 507 females) were retrospectively assessed in coronal sections for length and width measurements of the PH by 3 investigators. The study data were divided into 3 age groups(group 1: <20 years, group 2: 20-50 years, group 3: >50 years). Length and width were compared using one-way analysis of variance and the t-test for age and sex, respectively. Results: The length of the PH on the right side significantly increased from group 1 (6.11±1.47mm), through group 2 (6.65±1.67 mm) to group 3 (6.99±1.79 mm) and on the left side from group 2 (6.58±1.63) to group 3 (6.98±1.70). The width of the PH significantly decreased from group 1 (1.81±0.39 mm) to group 2 (1.61±0.39 mm) on the right side, and similarly from 1.87±0.36mm to 1.67±0.37mm on the left side. PH length (7.18±1.81mm on the right side and 7.10±1.72 mm on the left side) and width (1.68±0.38 mm on the right side and 1.74±0.36 mm on the left side) were significantly greater in males than in females. Conclusion: The length of the PH increased with age, whereas width first decreased and then increased. Length and width measurements were significantly higher in males than in females. These findings will aid in the diagnosis of untraceable pain in the oropharyngeal region related to altered PH morphology.

• Korean Journal of Veterinary Research
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• v.57 no.1
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• pp.47-50
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• 2017

Concentrations of cortisol, dehydroepiandrosterone and dehydroepiandrosterone-sulfate were measured by performing radioimmunoassay of the cerebrospinal fluid of 68 dogs diagnosed with idiopathic epilepsy or inflammatory, degenerative, or non-neurological disease. No steroid concentration differences were found among diagnoses. Dehydroepiandrosterone and dehydroepiandrosterone-sulfate concentrations were higher in males than in females and dehydroepiandrosterone-sulfate decreased with increasing age. No sex or age effects were observed on cortisol or hormone ratios. Although limited to a relatively small sample, our results show sex- and age-dependent variations in these neurosteroid concentrations in cerebrospinal fluid. The role of such variations in the pathophysiology of the dog brain warrants further investigation.