No abstract available.
Diatomaceous Earth* ; Pneumoconiosis*

OBJECTIVES: This study was carried out to investigate the prevalence and symptoms related to hair dyeing among university freshmen. METHODS: The authors conducted a questionnaire survey among 1, 499 university freshmen from Mar 11 to 15, 2002. RESULTS: The study group contained 710 females and 789 males. Up until 2002, 62.7% of the subjects had experienced hair dyeing, and this was significantly higher in females (66.2%, p< 0.05). The period of first experience of hair dyeing was in high school for 361 cases (38.4%), after high school for 345 cases (36.7%) and before high school for 234 cases (24.9%). The major reasons of hair dyeing were 'to improve their appearance' in 466 cases (49.6%), and 'to follow the hair dyeing fashion' in 169 cases (18.0%). The prevalence of hair dyeing in 2002 was 47.8%, and again was significantly higher in females (53.7%, p< 0.05). The major symptoms related to hair dyeing were 'cleaved and nonelastic hair' in 498 cases (69.6%), and 'thin and easily breakable hair' in 353 cases (49.3%). Of those, 361 cases (50.4%) appealed to three or more symptoms related to hair dyeing. Through multiple logistic regression, factors significantly associated with symptoms related to hair dyeing were found to be female (OR=2.14, 95% CI; 1.61-2.83), use of hair dryer (OR=1.36, 95% CI; 1.004-1.854), a frequency of hair dyeing of three or more (OR=1.48, 95% CI; 1.04-2.09), and a duration of processing hair dyeing of over 60 minutes (OR=2.18, 95% CI; 1.50-3.18). CONCLUSIONS: The prevalence and experience of hair dyeing were generally high among university freshmen. Therefore, more extensive epidemiological studies on the symptoms related to hair dyeing should be conducted.
Epidemiologic Studies ; Female ; Hair Dyes ; Hair* ; Humans ; Logistic Models ; Male ; Prevalence

No abstract available.
Diatomaceous Earth* ; Follow-Up Studies* ; Pneumoconiosis*

Chronic subdural hematoma usually occurs as a consequence of minor trauma. But, chronic subdural hematoma of occupational origin has not been reported yet in Korea. We experienced a case of chronic subdural hematoma induced by repeated trauma to the head. The patient was a 45-year-old male. He complained of repeated headache and nausea. By the computed tomogram, he diagnosed as chronic subdural hematoma and took the operation. He was not an alcoholism and had no intracranial disease nor coagulopathy. We studied all possibilities through working environment and personal environment survey. As a result, we decided the case as an example of cumulative trauma disorder to the head by occupational origin. We report a case of chronic subdural hematoma in the worker exposed repeated head trauma of occupational origin.
Alcoholism ; Craniocerebral Trauma ; Cumulative Trauma Disorders ; Head* ; Headache ; Hematoma, Subdural, Chronic* ; Humans ; Korea ; Male ; Middle Aged ; Nausea

No abstract available.
*Delivery of Health Care ; Environmental Exposure ; Humans ; Hydrofluoric Acid/*chemistry ; Republic of Korea

OBJECTIVES: To inquire the prevalence and the risk factors for myofascial pain syndrome (MPS) on young boys in order to use these results as the fundamental data for the prevention of their MPS. METHODS: For 7 days in May 1999, this research was taken on 489 male students ranging from 6th to 12th grade. We randomly selected a class for every group and from these classes we operated physical examinations, self-reported questionnaires and from a rehabilitation doctor, MPS test was taken. Thoracic kyphosis and lumbar lordosis were also taken by using the inclinometer. We defined MPS as a regional pain complaint, palpable taut band that is painful on compression. RESULTS: The shoulder MPS prevalence of the subjects were 29.7 persons/100 persons. The statistics revealed that as grades went up, the percentage significantly increased in the MPS prevalence. As of case-control study, 145 students who were tested postive in all aspects were placed as cases, and 176 students who were perfectly normal as controls on risk factors. As a result of comparing the student groups who were satisfied with their chairs to the student groups were not satisfied, the latter showed a significantly higher odds ratio (p<0.01). By the multiple logistic regression test, we concluded that the MPS disease was prevailed far more in the students in the higher grades (Odds ratio: 1.16, 95% C.I.: 1.03-1.31), and also those who were dissatisfied with their chairs than in the ones who were satisfied (Odds ratio: 1.92, 95% C.I.: 1.17-3.17). CONCLUSIONS: Significant correlations showed between the MPS diagnosed group and the students who are dissatisfied with their chairs. As a result, more research and observation has to be made concerning this disease, and the desks and chairs should be adjusted to suit the student? physical standards.
Animals ; Case-Control Studies ; Humans ; Kyphosis ; Logistic Models ; Lordosis ; Male ; Myofascial Pain Syndromes* ; Odds Ratio ; Physical Examination ; Prevalence* ; Surveys and Questionnaires ; Rehabilitation ; Risk Factors* ; Shoulder

OBJECTIVES: A group consisted of 32 Korean rural people had been travelled to Cambodia and Vietnam. During their travel for 7 days, first diarrheal case had occurred on 3rd day of travel and overall 8 people had diarrhea during travel. So we investigated the case for determination of the cause and route of infection. METHODS: We interviewed all 32 people by visiting or telephone and took 23 stool samples from them, which are examined by Gyeungsangbuk-do Government Public Institute of Health & Environment in Korea. We interviewed travel agency for travel route and schedule. RESULTS: The attack rate was 25.0% (8 cases) among 32 people. Of them, 3 cases were microbiologically confirmed to have the infection of Shigella flexneri (Serotype 3a). The result of this epidemiological investigation showed that the infection of shigellosis was happened in foreign countries. We assumed the water from Angkor-Watt was contaminated by S. flexneri. We could not able to test environmental specimens because of the infection is thought to be occurred in foreign countries. CONCLUSIONS: Most common infectious diseases from foreign countries are transmitted by water or food. Travellers to foreign countries must take caution for communicable diseases and must do report and get appropriate treatment when symptoms developed after travel.
Cambodia ; Communicable Diseases ; Diarrhea ; Disease Outbreaks ; Drinking ; Dysentery, Bacillary ; Korea ; Shigella flexneri ; Telephone ; Vietnam ; Water

PURPOSE: This study was conducted to understand the proportion and the risk factors of green tobacco sickness (GTS). METHODS: The authors conducted a questionnaire among tobacco harvesters; 94 people from 59 households at a village in Youngduk-gun from Feb 1 to Feb 3, 2002. RESULTS: The study group contained 49 females and 45 males. The mean durations of employment and the length of the working day were 23.3 14.2 years and 11.8 2.7 hours, respectively. The symptoms related to tobacco harvest were dizziness in 64 cases (68.1%), headache in 46 cases (48.9%), nausea in 45 cases (47.9%), sore eyes in 37 cases (39.4%), and vomiting in 36 cases (38.3%). The experience of GTS up until 2001 was 70.2%. The proportion of GTS in 2001 was 67.0% and was significantly higher in females (84.9%, p<0.01). The proportion of GTS by work days in 2001 was 16.4 spells/100 person days. The proportion of non-smokers was significantly higher than smokers (p<0.01). Therefore, smoking was negatively associated with GTS. The use of gloves and wristlets significantly increased the proportion of GTS (p<0.05). Through multiple logistic regression, significantly associated factors with GTS were found to be smoking (OR=0.18, 95% CI: 0.06-0.54), wearing of gloves (OR=9.20, 95% CI: 1.27-66.52), and sweating (OR= 3.52, 95% CI: 1.08-11.47). Of those who reported GTS in 2001, 65.6% underwent treatment from the local medical facilities. The distribution of the medical facilities utilized was pharmacies 39.3%, and medical health centers 26.2%. CONCLUSIONS : In Korea, there are many tobacco harvesters, and most may be stricken with green tobacco sickness. In the future it is hoped that more extensive epidemiological studies will be conducted
Dizziness ; Employment ; Epidemiologic Studies ; Family Characteristics ; Female ; Headache ; Hope ; Humans ; Korea ; Logistic Models ; Male ; Nausea ; Nicotine ; Pharmacies ; Poisoning ; Risk Factors ; Smoke ; Smoking ; Sweat ; Sweating ; Tobacco* ; Vomiting ; Surveys and Questionnaires

OBJECTIVES: This study was carried out to understand the prevalence and risk factors of green tobacco sickness (GTS) among Korean tobacco harvesters. METHODS: The authors conducted a questionnaire among the tobacco harvesters (842 persons from 449 out of 500 tobacco harvesting households) in Cheongsong-gun for 4 days from Sep 1 to 4, 2003. RESULTS: The study subjects contained 440 males and 402 females. The prevalence of GTS in 2003 was 39.2%, and was significantly higher in females (53.4%) than in males (25.6%, p<0.01). The incidence density of GTS according to the number of workdays in 2003 was 11.5 spells/100 person-days. The GTS symptoms reported by the tobacco harvesters in 2003 were nausea in 320 cases (97.0%), dizziness in 311 cases (94.2%), headache in 264 cases (80.0%) and vomiting in 209 cases (63.3%) etc. Through multiple logistic regression, the factors significantly associated with GTS were found. Odds ratio for smoking, age over sixty(compared with under forties), and working over 10 hours(compared with under 10 hours) were respectively 0.23 (95% CI: 0.16~0.33), 0.46 (95% CI: 0.23~0.93), and 1.53 (95% CI: 1.12~2.10). CONCLUSIONS: Our studies before this, there were significant recall bias by time lag between harvesting period and survey time. We tried to study promptly after harvesting tobacco leaves to solve this recall bias. More extensive epidemiologic studies, and educations for harvesters are expected.
Bias (Epidemiology) ; Dizziness ; Epidemiologic Studies ; Female ; Headache ; Humans ; Incidence ; Logistic Models ; Male ; Nausea ; Nicotine ; Odds Ratio ; Poisoning ; Prevalence* ; Risk Factors* ; Smoke ; Smoking ; Tobacco* ; Vomiting ; Surveys and Questionnaires

OBJECTIVES: In September 2008, an outbreak of diarrhea occurred among students attending Y school in Yeongcheon-si. Shigella sonnei was cultured from some of the rectal swabs. An epidemiological investigation was carried out to determine the source of the infection and the mode of transmission of the shigellosis outbreak. METHODS: The index case lived in the D rehabilitation facility in Gyeongsan-si and an additional epidemiological investigation was carried out there. The cases could not be questioned due to their mental handicaps. The teachers were interviewed instead. A patient case was defined as a resident with diarrhea more than one time a day from September 18 to September 26, 2008 or a resident with confirmed Shigella sonnei at the Y school or the D rehabilitation facility. RESULTS: The attack rate was 1.2% (8 persons) among 659 persons in the Y school and D rehabilitation facility. Five persons were microbiologically confirmed to have the infection and three persons were diagnosed on the basis of symptoms. Shigella sonnei was cultured from five of the 659 rectal swabs. However, 80 environmental specimens including drinking water, preserved foods, and cooking utensils were negative. All eight patients were Y school students and had been living in group boarding and lodging. Six of them lived in the D rehabilitation facility and two lived in the dormitory at the Y school. Five cases showed pulsed-field gel electrophoresis patterns that were identical for Shigella sonnei. CONCLUSIONS: The results of this study showed that the infection source of the shigellosis outbreak, in the two places, were identical. It is likely that the infections initially spread from a teacher or volunteer and then among the students.
Cooking and Eating Utensils ; Diarrhea ; Disabled Persons ; Disease Outbreaks ; Drinking Water ; Dysentery, Bacillary ; Electrophoresis, Gel, Pulsed-Field ; Food, Preserved ; Humans ; Intellectual Disability ; Korea ; Shigella ; Shigella sonnei