Annals of Occupational and Environmental Medicine

Ji Yeon Son

5 Articles

Variation in Patient Days and Medical Care Benefits Among Finger-Amputated Industrial Injuries: Jong Ho Lee, Sin Kam, Keon Yeop Kim, Young Sook Lee, Yune Sik Kang, Young Ae Ha, Ji Yeon Son, Soon Woo Park, Jong Young Lee; Korean Journal of Occupational and Environmental Medicine 1997;9(3):439-451. Published online October 31, 1997; DOI: https://doi.org/10.35371/kjoem.1997.9.3.439

Abstract PDF: No abstract available.

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Effects of Number and Method of Visual Stimuli on Simple Reaction Time: Jee Sung Kim, Sung Ah Kim, Chae Yong Lee, Soon Woo Park, Si Hyun Nam, Jong Young Lee, Ji Yeon Son; Korean Journal of Occupational and Environmental Medicine 1996;8(3):477-489. Published online December 31, 1996; DOI: https://doi.org/10.35371/kjoem.1996.8.3.477

In. order to evaluate the effects of number and method of visual stimuli on simple reaction time and determine the proper number of trials, simple reaction time of the computerized test of NTOS (Neurobehavioral Test for Occupational Screening) was carried out on 240 medical students. The prominent difference was found between male and female on simple reaction time. Regarding the effect of number based on the parameters of measures and the purpose of test itself, 64 trials was considered as proper number. The mean reaction time was different according to the methods of visual stimuli, such as color and size(p<0.05). The larger and more intence visual stimuli were, the faster sim-ple reaction time was. In respect to sex, that difference was similar. But, there was no difference depending upon whether the each result of each trial was showed on the monitor. The subjects, however, showed much interest when the result showed. Further studies, including the various variables on visual stimuli, are required to compare among various studies.

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Performance assessment on the Korean Computerized Neurobehavioral Test using a mobile device and a conventional computer: an experimental study
Young Seok Byun, Sung Kyu Park, Joon Sakong, Man Joong Jeon
Annals of Occupational and Environmental Medicine.2018;[Epub] CrossRef

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Development of Korean Computerized Neurobehavioral Tests arid Evaluation of Applicability: Jong Young Lee, Sang Soong Nam, Chae Yong Lee, Sung Ah Kim, Ju Young Lee, Soon Woo Park, Ji Yeon Son; Korean Journal of Occupational and Environmental Medicine 1996;8(3):546-559. Published online December 31, 1996; DOI: https://doi.org/10.35371/kjoem.1996.8.3.546

Abstract PDF: We tried to develop Korean computerized neurobehavioral tests to promote neurobehavioral research and screening in occupational setting in Korea. This program was designated Neurobehavioral Tests for Occupational Screening (NTOS). NTOS consisted of 3 test items, choice reaction time (2 choice and 4 choice), simple reaction time (visual and auditory stimulus), finger tapping test (both hands). NTOS was administered to 120 students of medical school and to evaluate applicability. The results of reaction time tests was positively skewed but finger tapping test was negatively skewed. The only data that was not skewed was the mean frequency of finger tapping of dominant hand. The means and standard deviations of choice reaction time were 429.7 msec and 109.8 msec (2 choice), 493. 6 msec and 92.0 msec (4 choice). The results of simple reaction time were 254 msec (mean) and 55 msec (standard deviation). The mean frequency of finger tapping of dominant hand was 77.2 and that of nondominant hand was 64.9. The results of 2 choice reaction time test and finger tapping of dominant hand showed statistically significant sex difference. Factor analysis showed 2 factors, 1st reaction tests and 2nd tapping. The mean frequency of finger tapping had negative weak correlation with other reaction time test results. This computerized neurobehavioral tests may be widely applied in the other future studies, and is to be improved for the practical purpose of the occupational neurotoxico-logical area.

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Trace of Occupational History on Lung Cancer Patients: Doo Hie Kim, Ji Yeon Son, Wan Seoup Park, Sung Chul Hong, Jong Young Lee; Korean Journal of Occupational and Environmental Medicine 1995;7(2):219-229. Published online October 31, 1995; DOI: https://doi.org/10.35371/kjoem.1995.7.2.219

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The relationship between occupation and risk of lung cancer was analyzed in hospital based case-control study conducted in Taegu on 168 patients with histologicatly confirmed lung cancer and age group (30-39, 40-49, etc) and sex frequency-matched 168 controls admitted into hospitals for other internal medicine problems. A self administered questionnaire was used to obtain occupation, resident environment, smoking histories and specific agent exposure histoy. The conditional logistic regression was used to estimate odds ratio for age group and sex frequency matched, after controlling for smoking status (non smoker, exsmoker, current smoker) Significant association was observed for farmer[odds ratio(OR), 1.84 , 95% confidence interval(CI), 1.16-2.94], briquette stove users(OR, 3.0 , 95% CI, 1.06-8.25), agricultural chemicals users[0R, 2.14 , 95% CI, 1.35-3.37], and welding/fume exposures[0R, 10.56 ;95% CI, 1.07~103.90]. Although there were elevated risks associated with production, home industry, transportation/storage/communication, lodgement/food worker and construction, none were statistically significant.The effect of smoking was showed significantly increased risk for exsmoker [0R, 4.50 ,95% CI, 1.99-10.16] and current smoker [OR, 3.98 , 95% Cl, 1.88-8.45] As results, although smoking is important risk of lung cancer, occupation and resident environment are showing association of lung cancer. So further evaluation is necessary for occupation risk and take preventive measures.

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Occupational Cancers with Chemical Exposure and their Prevention in Korea: A Literature Review
Kyung-Taek Rim
Asian Pacific Journal of Cancer Prevention.2013; 14(6): 3379. CrossRef

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Weighted Needle Pinprick Sensory Threshold (WPT) and Arthropornetric Parameters: Jong Young Lee, Ji Yeon Son, Soon Woo Park, Eung Chun Lee, Doohie Kim; Korean Journal of Occupational and Environmental Medicine 1994;6(2):342-347. Published online September 30, 1994; DOI: https://doi.org/10.35371/kjoem.1994.6.2.342

Abstract PDF: To assess the relationship of pinprick sensory threshold with height and weight, Ninety seven healthy young (age 19 to 28) males were tested on their anatomical snuff box of both Hands. Their WPT was measured by device holding and moving weighted needle sensory threshold apparatus. Mean of the WPT was 0.43(+/-0.24) g in left and, 0.53( 0.30) g in right hand. Difference of WPT between the right and left hand appeared statistically significant (p<0.01) . Correlation coefficient of WPT with height was 0.26461 (p<0.01) in left and, 0.31856 (p<0.01) in right hand. Weight was statistically significantly correlated with WPT in left hand (r=0.24932, p<0.01) The study shows that the left-right difference and influence of height in pinprick sense may exist in normal healthy male adults.

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