Annals of Occupational and Environmental Medicine

Original Article

Health Evaluation of ex-workers occupationally exposed to Carbon disulfide: Subjective Symptoms and Related Factors according to compensation for CS2 poisoning: Kyung Jae Lee, Joo Ja Kim, Hyun Rim Choi, Gil Seong Yang, Ho Kim, Shang Hyuk Yim, Yun Geun Lee; Korean Journal of Occupational and Environmental Medicine 2003;15(2):150-161. Published online June 30, 2003; DOI: https://doi.org/10.35371/kjoem.2003.15.2.150

OBJECTIVES
To investigate the chronological subjective symptoms and related factors in ex-workers who were occupationally exposed to Carbon disulfide.
METHODS
One hundred and seventy-seven subjects (147 males and 30 females) were randomly selected among ex-workers and interviewed by well trained doctors, who filled out a structured questionnaire developed by authors on the subjective symptoms. The questionnaire was composed of symptoms in the head and neck, and those of the neuro-psychological, respiratory, endocrine, musculoskeletal, and reproductive systems. Other factors such as general and occupational characteristics including work department, work duration, duration since cessation of exposure, and compensation for occupational disease were also investigated.
RESULTS
The mean subject age was 55.4 years. The mean cumulative exposure index (CEI) was 38.96 +/- 31.18. CEI was significantly higher in the compensated group (47.61 +/- 32.51) than in the non-compensated group (26.81 +/- 24.75)(p=0.000). Symptom complaints were significantly higher in the compensated group in all organ systems, and their incidence increased gradually until 10 years after cessation of work, and then decreased. The mean duration for cessation of exposure at the time of compensation was 10.97 years. The significantly different factors between the compensated group and the non-compensated group were total cumulative exposure index and the time interval between the cessation of work and the time of compensation.
CONCLUSION
Our findings suggest that total cumulative exposure index and the time interval between the cessation of work and the time of compensation may be important factors affecting the compensation for occupational disease. Therefore, further studies will be necessary.

Citations

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Health Behavior and Health Condition of Patients Exposed to Carbon Disulfide according to Exposure Level
Hyun Joe
Soonchunhyang Medical Science.2020; 26(2): 53. CrossRef
Recognition and Using Status of Carbon Disulfide (CS2) as Fumigant for Controlling Chestnut Weevil, Curculio sikkimensis among Chestnut Farmers
Moo-Sik Lee, Eun-Young Kim, Jae-Lim Lee, Gi-Yeon Sohn
Journal of agricultural medicine and community health.2016; 41(2): 63. CrossRef

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Original Article

Subjective Symptoms of Fatigue in Pharmacists: Hai Jin Lee, Jaek Jun Kim, Chung Il Chun, Jung Wan Koo, Chee Kyung Chung; Korean Journal of Occupational and Environmental Medicine 1997;9(1):26-39. Published online February 28, 1997; DOI: https://doi.org/10.35371/kjoem.1997.9.1.26

Abstract PDF

In order to investigate industrial fatigue of pharmacists, the questionnaire survey for subjective symptoms and its related factors was carried out on 435 pharmacists who were managing pharmacies in Seoul. The Questionnaires were composed of three groups of 10 items each, representing dullness and sleepness(I), difficulty in concentrations (II) and bodily projection of fatigue (III). The results were as follows : 1. The complaint rate of fatigue was the highest in 'eye strain' and followed by 'whole body tires', 'apt to forget', 'leg feel heavy', 'feel drowsy' and 'feel like tying' in the descending order. 2. The average weighted score of fatigue complaint was the highest in dullness and sleepness group(I) and followed by difficulty in concentrations group(II) and bodily projection of fatigue group(III) in the descending order, suggesting the heavier mental stress rattier than physical burden of the pharmacists work contents. 3. The average weighted scores of fatigue complaints were significantly higher in female and 0-3 off-duty days per month group than those in male and more than 4 off-duty days per month group. 4. The average weighted scores of fatigue complaints were significantly different among the characteristic groups of counselling postures, noise and using chairs. 5. The groups with the high quality of sleeping, regular physical exercise and diet, or satisfied with their job and income had significantly lower average weighted scores of fatigue complaints. 6. The 42.5% of the subjects complained feeling heavy chronic fatigue. And the significant differences for average weighted scorns were noted among three groups, representing 26.64 in feeling heavy chronic fatigue, 18.23 in feeling light chronic fatigue, and 9.50 in feeling no chronic fatigue.

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Work-Induced Subjective Fatigue Status in Optometrists
Jeong-Yun Lee, Hye-Kyung Hwang
Journal of Korean Ophthalmic Optics Society.2023; 28(3): 133. CrossRef

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Original Article

Factors Affecting the Complaints of Subjective Symptoms in VDT Operators: Kye Yeoul Park, Ki Joo Bak, Jung Gun Lee, Yeon Soo Lee, Jae Hoon Roh; Korean Journal of Occupational and Environmental Medicine 1997;9(1):156-169. Published online February 28, 1997; DOI: https://doi.org/10.35371/kjoem.1997.9.1.156

Abstract PDF

In order to investigate symptoms prevalence related to visual display terminal (VDT) syndrome, and to evaluate the variables affecting the development of the VDT syndrome, a questionnaire survey was conducted on 119 (92 men and 27 women) VDT operators who had been engaged in one plant design company in Seoul. The results were as follows : The average age of questionnaire respondents was 30. The average years of service were 4.3 years, and the working hours per day with VDT for half of them were more than 4 hours with the average being about 4.7 hours. The majority of subjects (71 persons) were working at computer aided design (CAD) or computer programming tasks. Subjective symptoms of VDT syndrome were divided into 4 groups with musculoskeletal, eye, skin, and industrial fatigue according to their major affected organ. 4 high incidence of complaints of eye discomfort was observed. In the 3 subgroups of industrial fatigue symptom, the highest average group score was accounted for by 'dullness and sleepiness', followed by 'difficulty in concentration', 'bodily projection of fatigue' in the order of sequence, suggesting the heavier mental stress of VDT work rather than physical burden. Relationship among these 4 groups of symptoms showed statistically significant correlations one another. This result suggests that VDT syndrome is a multi-organ disease composed of these 4 symptom groups which were commonly caused by the use of VDT. Multiple regression analysis were used to examine the relationship between risk factors and these symptom groups of VDT syndrome. As the result of analysis, the most important risk factor for VDT syndrome was the average daily VDT working hours. The longer was VDT working hours, the higher was symptom prevalence of VDT syndrome. In addition, daily total working hours including VDT working hours and shift of work also affected the health of VDT users. In order to protect workers from VDT syndrome, it is urgently required to implement standard management recommendations including restriction of VDT working hours and allowance of more sufficient resting time for VDT workers.

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Myung Hwan Yun, Yun Geun Lee, Hong Jun Eoh, Sang Hyuk Lim
International Journal of Industrial Ergonomics.2001; 27(5): 347. CrossRef

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Original Article

A Study on the Relationship between Subjective Symptoms and Psychosocial Well-being Status of VDT Operators: Bong Suk Cha, Sang Baek Ko, Sei Jin Chang, Chang Sik Park; Korean Journal of Occupational and Environmental Medicine 1996;8(3):403-413. Published online December 31, 1996; DOI: https://doi.org/10.35371/kjoem.1996.8.3.403

Abstract PDF

This study was undertaken to identify the relationship between the subjective symptoms and the psychosocial well-being status of VDT operators. The study subjects of this study were 89 female telephone operators in Korea Telecom. The mean age of study subjects was 37.7 (s.d.; 3.1), and 91% of them were the married and 9% were the single. The mean values of psychosocial well-being status by general characteristics were not statistically significant. Of the 89 operators, 98.9% felt musculoskeletal subjective symptoms in shoulder, 91.2% in neck, 89.9% in hand, 89.9% in lowback, 88.9% in arm, 87.8% in back, and 85.6% in leg, respectively. The mean scores of the psychosocial well-being status by three categories of subjective symptoms were significant in shoulder, neck, arm, hand, and leg, but were not significant in back and lowback. Correlations between the subjective symptoms and the psychosocial well-being status were significant in discomfort scale, leg, arm, neck, shoulder, lowback, and hand, but were not significant in back. Multiple regression analysis were used to determine whether the independent variables (age, discomfort, and subjective symptoms) contributed to explaining the psychosocial well-being status. Discomfort and the subjective symptoms in leg were a correlate of the psychosocial well-being status.

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Kyung Ko, Hee-Soo Kim, Ji-Hea Woo
Journal of the Ergonomics Society of Korea.2013; 32(3): 273. CrossRef
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Yun-Soo Mok, Dong Won Lee, Seong Rok Chang
Journal of the Korean Society of Safety.2013; 28(3): 100. CrossRef
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Jae-Yoon Lee, Byeong-Yeon Moon, Youn-Hong Jeong, Hyun-Kyung Woo
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Byung-Chan Park, Hae-Kwan Cheong, Eun-A Kim, Soo Geun Kim
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Original Article

A Study on the Cervicobrachial Syndrome among the Microwave-oven Assemblers (I): A Review on the Symptoms Investigated by the Questionnaire: Yang Ok Kim, Jong Park, So Yeon Ryu; Korean Journal of Occupational and Environmental Medicine 1995;7(2):306-319. Published online October 31, 1995; DOI: https://doi.org/10.35371/kjoem.1995.7.2.306

Abstract PDF

To find the characteristics of the subjective symptoms and its related factors among the patients with the cervicobrachial syndrome, an interview survey was made toward 137 patients complaining the symptoms in cervicobrachial area out of 313 workers occupied in a microwave-oven assembling factory from December 1993 to February 1994.
Results
were as follows : 1. The patients were classified by the severity of the syndrome as 6 persons (4.4%) at grade I (the mildest grade), 48 persons (35.0%) at grade II, 47 persons (34.4%) at grade III-1, 11 persons (8.0%) at grade III-2 and 25 persons (18.2%) at grade IV. 2. Only 3.6% of the total patients under the study felt the main symptoms of the cervicobrachial syndrome 36 months before this study, and then the number of patients increased gradually, but the incidence of the syndrome increased suddenly from 25.1% to 74.9% since the factory had elevated the height of the belt conveyer-worktables from 75.0cm to 87.7 cm 13 months before the study. 3. Although the higher percentage of the female workers felt the subjective symptoms including the pain at the neck and shoulder, the discomfort or pain at the back and the discomfort or pain at the wrist or the finger than male workers significantly (p<0.05). The male workers, however, showed more abnormal X-ray findings than the female workers significantly (p<0.05). 4. Between the prevalence of the cervicbbrachial syndrome and the number of actual workers occupied at the factory during last-24 months, a negative correlation (r=-0.508~r=-0.665) was observed. 5. The measured workplace environment of the studied factory (average temperature: 13.3 degrees C, average noise: 78.8 dB, average illumination: 241.4 Lux) was the poorer condition than the recommended level (17degrees C or more, lower than 75 dB and 400 Lux or more). 6. Neither items to check the cervicobrachial syndrome during the entrance and health maintenance examinations nor early treatment program for the syndrome were found, at the factory. In conclusion, the primary cause of the cervicobrachial syndrome of the workers were considered due to their repeated monotonous motions on the neck, the shoulder, the arms and the hands for a long duration (2-3 years) with the uncomfortable working posture under the uncomfortable workplace environments, and the condition got aggravated due to the inappropriated health management program for its secondary prevention.

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Original Article

Lead Exposure of Tollgate Workers on Korea Expressway: Chung Yill Park, Jung Wan Koo, Young Man Roh, Seung Han Lee; Korean Journal of Occupational and Environmental Medicine 1990;2(2):134-141. Published online August 31, 1990; DOI: https://doi.org/10.35371/kjoem.1990.2.2.134

Abstract PDF

In order to evaluate possible effects of lead exposure, lead absorption and subjective symptoms in the expressway tollgate workers, 147 workers who have benn working at 4 expressway tollgates werer studied. Study variables were blood lead(PbB), urine lead(PbU), delta-aminolevulinic acid in urine (ALAU), coproporphyrin in urine (CPU), zinc protoporphyrin in whole blood (ZPP), hemoglobin, hematocrit, red blood cell count and symtom index of lead exposure. Subjective symptoms, 16 items, were investigated by a physician's interview. The results were as follows: 1. The most prevailing subjective symptom related to lead exposure were reported fatigue (41.5%), follow by abdominal discomfort (26.5%), loss of appetite (23.8%) and numbness (21.0%). 2. The mean air concentrations of lead at inside and outside of tollbooth were 6.8 (0.2~17.9) and 4.8 (0.2~17.5) microgram/m3, respectively. 3. The mean values of lead absorption indices (blood lead, urine lead, delta-aminolevulinic acid, coproporphyrin in urine and zinc protoporphyrin in blood) of workers were 19.99 (4.2~38.9) microgram/ dl, 29.82(6.3~68.6) microgram/l, 1.04(0.17~3.41) mg/l, 30.30(11.6~58.0) microgram/l and 10.51(1.0~31.0) microgram/l, respectively. And the mean values of hemoglobin, hematocrit and red blood cell count were 15.41 (10.2~18.9)g/dl, 45.88(33.9~54.7)%, 497.37(415~591)x10(4)/mm3, respectively. 4. The mean number of positive responses to subjective symptoms(16 items) was 2.08(13%) and tended to decrease with increasing work duration and age. 5. The number of positive responses of subjective symptoms did not show dose-response relationship with lead absorption indices.

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