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JPMPH : Journal of Preventive Medicine and Public Health

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Volume 23(2); June 1990
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Original Articles
A study on the Values of Total Serum Cholesterol in Healthy Non-Pregnant and Pregnant Women.
Cheol In Rhyu, Don Kyoun Kim
Korean J Prev Med. 1990;23(2):167-177.
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The author investigated the values of total serum cholesterol and its correlation with the physical factors to have potential as a line in the chain of basic investigation to establish maternal health program. The study group was composed of 167 healthy non-pregnant and 209 pregnant women in the age of 20-39 residing in Pusan area. The obtained results were as follows: 1. No significant differences were found in height and systolic and diastolic blood pressure in both groups except for the elevation of Broca's index by gaining the weight in pregnant women. 2. There were significant differences in the total serum cholesterol level of the healthy and pregnant women as 165.9 and 212.6 mg/dl, respectively, not showing the differences in the age. Total serum cholesterol values in both group followed approximately normal distrubution curve. 3. The significant correlation to the values of total serum cholesterol were found between weight and Broca's index in healthy women and between weight, Broca's index and duration of pregnancy in pregnant women. 4. The values of total serum cholesterol in pregnant women showed increasing tendency with the duration of pregnancy as 168.1 in 12 weeks and below, 209.6 mg/dl in 13-26 weeks and 235.4 mg/dl in 27 weeks and above group. Total serum cholesterol values by duration of pregnancy followed normal distribution curve.
Summary
A Study on the Induction of Sister-Chromadd Exchanges in Chinese Hamster Ovary Kl Cells by Exposure to Cadmium.
In Kyung Hwang, Don Kyoun Kim
Korean J Prev Med. 1990;23(2):178-184.
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AbstractAbstract PDF
In order to exmaine the mutagenicity of cadmium dichloride the author studied the induction of sister chromatid exchanges in chinese hamster ovary K1 cells which treated with cadmium dichloride at various concentrations. The results obtained were as follows: 1. In cells treated with 10(-4) M cadmium dichloride, a small number of cells were visable but no mitosis was bound. 2. The frequencies of sister chromatid exchanges in cells treated with 10(-5) M and 10(-6) M cadmium dichloride as 10.7 +/- 1.9 and 8.3 +/- 2.1, respectively, were significantly increased for control (6.0 +/- 2.3). (p<0.05). 3. There were dose-dependent relationship between the concentration of cadmium dichloride and frequency of sister chromatid exchanges in cells treated with cadmium dichloride at concentration ranging from 10(-5) to 10(-7) M.
Summary
Change in Medical Care Utilization over Time in Early Years of Insurance Coverage.
Byoung Yik Kim, Youngjo Lee, Dal Sun Han
Korean J Prev Med. 1990;23(2):185-193.
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AbstractAbstract PDF
The purpose of this study is to observe the pattern of change in medical care utilization over time in early years of insurance coverage. The source of data is the benefit records file of a voluntary medical insurance society for covering the four-year period, from 1982 to 1985. The measure of medical care utilization used in this study is the age-sex standardized percentage of the enrollee who have visited a physician over total analytical population during a three-month period. For six cohorts by the year of enrollment (1979-1984), the relationship between the utilization and duration of insurance coverage was examined controlling for the calender year and season. In the analysis, logistic multiple regression and residual analysis were employed. It was observed that medical care utilization rapidly increased during the early stage of insurance coverage, and after then increased at a slower rate over time to become almost stable in about twenty months.
Summary
A Study on the Distributions of Paraoxonase Activity and the Factors affecting Paraoxonase Activity of a Rural opulation.
Jaecheol Song, Hung Bae Park
Korean J Prev Med. 1990;23(2):194-200.
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AbstractAbstract PDF
The paraoxonase (E. C. 3.1.1.2.) is a major enzyme to detoxicate the organophosphorus and carbamate which are the most widely used as the agricultural spraying insecticides. To investigate the distributions of plasma paraoxonase activity and the fators affecting the enzyme activity, the plasmas of 945 Korean rural population were analyzed with the modified Krisch's direct sphectro;hotometry method. Three indices of the enzyme activity-basal activity, stimulated activity (by NaCl), % stimulation -were obtained from the analysis. Three indicies suggested unimodal distributions, so we couldn't identify the low activity group; risk group to organophosphorus & carbamate insecticides poisoning. There is no significant relation between 3 activity and the stimulated activity have significant relationship and high coefficient of determination with the activities of their parents (r2=0.30, 0.24; p<0.05), but the % stimulation does not (r2=0.02; p<0.05). These results suggest that the activity of paraoxonase is determined mainly by the genetic factor.
Summary
An Estimation of Carbamate Pesticide Exposure in a Rural Area: A pilot study using personal sampler and gas chromatography.
Byung Hae Kim, Yong Sik Kim, Jin Su Choi
Korean J Prev Med. 1990;23(2):201-206.
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AbstractAbstract PDF
The exposures to carbamate pesticides (BPMC specifically) of agricultural workers were estimated by collecting pesticide in air by personal sampler and by analyzing with gas chromatography. Data revealed that the highest BPMC concentration in the aspirated air was 7.7 mg/m3. Concentrations were generally higher in the group whose spray conditions were controlled than the group uncontrolled. Actual concentrations were relatively lower than the values predicted theoretically. These findings suggest that personal sampler be useful in the estimation of pesticide exposure.
Summary
Study of Cancer Cases by Industry in Kwangju-Chonnam Area: Based on Industrial Medical Insurance Record.
Yong Sik Kim, Won Moon Oh, Hyung Cheol Park, Jin Su Choi, In Hyun Song
Korean J Prev Med. 1990;23(2):207-215.
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AbstractAbstract PDF
In order to investigate the occurrence characteristics of cancer in terms of industry in Kwangju-Chonnam area, medical utilization records of industrial medical insurance corporations during the period of 1987 to 1988 were reviewed for the identification of neoplastic disease. The cases obtained from the medical records were followed up for the verification and to get additional information. Standardized incidence data were compared by occupational characteristics. Multiple logistic regression analysis was applied to analyze the difference of incidence or distribution of cancer as a whole or of some selected cancer. Total cases of cancer identified were 242 during the study period. Annual incidence rate was calculated as 123.1 per 100,000 person. The frequent types of cancer were cancers of stomach, liver, lung, colon and rectum, bladder and lymphoma in descending order. Employees of mine and other sand handling industries showed significantly higher risks for cancer of stomach and cancer as a whole. Employees of the transportation industry showed the higher risk for cancer of liver. Workers in small-sized industry (< or = 100) had a higher risk for cancer than who in large-sized industry (>100). These findings suggested the effect of occupational environmental exposure to cancer development.
Summary
Analysis of charges per case by hospital characteristics: In regard to acute appendicitis and NSVD.
Sang Hyuk Jung, Seung Hum Yu, Han Joong Kim
Korean J Prev Med. 1990;23(2):216-223.
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AbstractAbstract PDF
To identify the factors influencing the charges per case of acute appendicitis and normal spontaneous vaginal delivery (NSVD), the personal data-base files and hospital-characteristics-reporting data files of Korea Medical Insurance Corporation were analyzed. One hundred and twenty-nine institutions were selected. The results of this study were as follows: 1. The differences of charges per case with respect to hospital ownership, location, and equipment levels were statistically significant. 2. The results of multiple regression analysis revealed that bed capacity was the most significant variable in both diseases. 3. Ownership was significant variable in acute appendicitis. In NSVD, ownership and hospital equipment level were statistically significant. In conclusion, bed capacity was statistically the most significant variable in the analysis of charges per case. And we thought that the results of this study would influence the policy of the hospital bed supply.
Summary

JPMPH : Journal of Preventive Medicine and Public Health