• Journal of Korean Society of Occupational and Environmental Hygiene
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• v.25 no.1
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• pp.13-19
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• 2015

Objectives: The purpose of this study was to assess excavator drivers in order to determine the proportion showing subjective symptoms of musculoskeletal disorders and to evaluate the association between the symptoms and characteristics of the subjects. Methods: A questionnaire survey was conducted to collect the information on participants' age, average working hours per day, duration of career (years), work-related musculoskeletal symptoms, and more. The final dataset included 141 excavator drivers. Frequency and percentage were summarized and then the associations between the characteristics of the subjects and symptoms were evaluated as odds ratios (ORs) and 95% confidence intervals (CIs) using multiple logistic regression analysis. Results: Seventy-six percent of the currently reported musculoskeletal symptoms. Those who have musculoskeletal symptoms attributed their symptoms to unstable posture at work, mental stress or vibrations. There was a significant association between symptoms of musculoskeletal disorders and career of excavator drivers (P for trend=0.04). Conclusions: The results of this study suggest that the prevalence of musculoskeletal disorders may be high among excavator drivers and warrants well-designed studies on work-related disorders among excavator drivers.

• Journal of agricultural medicine and community health
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• v.48 no.1
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• pp.1-12
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• 2023

Objective: The purpose of this study was to identify factors associated with subjective memory impairment in patients with diabetes mellitus in a metropolitan city. Methods: The subjects of this study were 351 patients with diabetes mellitus aged 50 and over from five districts of Gwangju who participated in the 2018 Community Health Survey. We analyzed general characteristics, health-related behaviors and health related conditions and subjective experience of memory impairment. To find factors associated with subjective memory impairment, the chi-square test and multiple logistic regression analysis were used. Results: Of all subjects, 31.3% was reported subjective experience of memory impairment. The odds ratios (ORs; 95% confidence interval (CI)) for subjective memory impairment according to age were statistically significant at 1.9 (0.9-4.3) in patients in 60s and 2.2 (1.1-4.7) in patients in beyond 70s compared to those in 50s. The OR (95% CI) of ex-smoker compared to the non-smoker was 0.3 (0.8-0.9). The OR (95% CI) of depressive symptom compared to no depressive symptoms was 4.9 (95% CI: 1.8-13.7). Conclusion: In this study, subjective memory impairment in patients with diabets mellitus was associated with age, smoking, and depressive symptoms. Based on the results of this study, subjective memory impairment should be detected early through periodic cognitive function evaluation for elderly patients with diabetes mellitus, and a program for healthy cognitive function should be included in diabetes management program.

• Korean Journal of Occupational Health Nursing
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• v.7 no.1
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• pp.55-64
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• 1998

In order to investigate and compare the health risk factors of nurses in the operating room(OR nurse) and ward (WARD nurse), the questionnaire survey for subjective symptoms was carried out on 553 nurses(132 OR nurses and 421 WARD nurses) who were employed at seven hospital. The self-administered questionnaries were composed of low back pain, subjective fatigue symptoms, musculo-skeletal symptoms, psychological stress and reproductive function. The results were as follows : 1. In the type of working posture and working environment, there were significant difference between two groups for working posture, waist form, height of working table, satisfaction of chair, lifting & carring. 2. Job satisfaction, duration of work, height of working table, satisfaction of chair, lifting & carring were significantly associated the low back pain. 3. In the complaints of subjective fatigue symptoms, the total mean score was higher in OR nurse than WARD nurse, but there was not significant. The items that the mean score of OR nurse was significantly higher than WARD nurse were 'head feels muddled', 'apt to forget', 'feel choky'. 4. In the complaints of musculo-skeletal syrrptoms, the total mean score was higher in OR nurse than WARD nurse, but there was not significant. The item that the mean score of OR nurse was significantly higher WARD nurse was 'wrist discomfort or pain'. 5. The comparison of spontatenous abortion in married nurses who had the experience of pregnancy were significantly associated the stress risk group. 6. In all of OR and Ward nurses, the job satisfaction is associated with subjective fatigue symptoms, musculo-skeletal symptoms, and stress. In conclusion, it suggested that working posture, working environment, stress, and job satisfaction were health risk factors of nurses working in the operating room. Further prospective intervention studies should be conducted to educate right working posture, improve of working environment, decrease of stress, and increase of job satisfaction.

• The Korean Journal of Health Service Management
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• v.6 no.1
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• pp.15-25
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• 2012

The purpose of this study is to examine relations among the subjective oral symptoms, masticatory performance and life quality of aged people residing in some regions of a large city, ultimately providing basic information needed to develop and implement programs oral health project and oral health education programs for the oral health promotion of those people. For the above purpose, this researcher conducted a questionnaire survey of people aged 65 or over from July 14th to 30th, 2011. Among the copies of the questionnaire distributed to the subjects, 318 were recollected. Out the recollected forms, 18 which were deemed as in appropriately filled in were excluded, and the remaining 300 were finally analyzed. The results are as follows. Subjective oral symptoms and masticatory performance have correlation(p<0.001) with aged people's life quality. Factors of influencing life quality were indicated to be gender(p=0.046), age(p=0.008), appearance of living together(<0.001), masticatory performance(p<0.001), and temperature reaction(p=0.018). This study has limitation because of being information that was obtained just with questionnaire survey on subjective oral symptoms. It is considered that there is a need of surveying along with objective data on oral symptoms hereafter.

• Korean Journal of Occupational Health Nursing
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• v.16 no.1
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• pp.37-47
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• 2007

Purpose: To find out the relationship between the shift work, and disrupted sleep and consequent fatigue symptoms. Methods: The questionnaires were given to 345 nurses of 4 hospitals with over 400 beds in Daejeon. Results: The shift workers showed worse subjective quality of sleep than the daytime workers, and had significantly higher frequency of "cannot get to sleep within 30 minutes", "wake up in the middle of the night" and "wake up in the early morning". The shift workers had significantly higher scores of subjective symptoms of fatigue than the daytime workers, and the fatigue was found to be the mental type. The subjective symptoms of fatigue scores were significantly higher in the group who had "cannot get to sleep within 30 minutes", "wake up in the middle of the night" and "wake up in the early morning". Conclusion: The study results indicated that the shift workers had the higher level of subjective symptoms of physical fatigue as well as the worse quality of sleep than the daytime workers. It is speculated that the factors attributable to the poor quality of sleep or sleep induction disorders of nurses of hospitals could be due in major part to adaptational difficulties resulting from frequent night shifts.

• Science of Emotion and Sensibility
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• v.13 no.4
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• pp.721-732
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• 2010

As increasing of electrical device usage, social concerns about the possible effects of 60Hz electromagnetic fields (EMF) on human health have increased. The number of people with self-attributed electromagnetic hypersensitivity (EHS) who complain of subjective symptoms such as headache, insomnia etc. also increased. However, we don't know whether the EHS results from psychological factor or real perception to the electromagnetic field. In this study, we simultaneously investigated physiological changes(heart rate, respiration rate, heart rate variability, alpha and beta waves in EEG), subjective symptoms and perception accuracy to assess origins of subjective symptoms according to the EMF exposure. Experiment consists of real and sham sessions and 60Hz 12.5uT magnetic field was on(real) or off(sham) to 15 EHS and 16 nonEHS. As the results, EMF exposure did not have any effects on physiological parameters or subjective symptoms for both groups. There was also no evidence that EHS group perceived the EMFs correctly than the control group. Therefore, the origins of subjective symptoms is not the 60Hz magnetic field but psychological factors.

• Journal of Korean Ophthalmic Optics Society
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• v.17 no.4
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• pp.381-388
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• 2012

Purpose: In this study, the changes in the shape of silicone hydrogel lenses, dryness of lens and objective/ subjective symptoms that could be induced by repeating dryness of lens and objective/subjective symptoms were investigated. Methods: After drying and rehydrating of silicone hydrogel lenses with different lens material and thickness for 4 times, their overall diameters and base curves were compared. Subjective symptoms, non-invasive tear break-up time (NIBUTs) and blinking rate were evaluated after wearing dehydrated silicone hydrogel lens. Results: Overall diameter and base curve increased in all tested silicone hydrogel lenses by repeating dryness and rehydration. The degree of change in over all diameter and base curve were variable on the material. There were irregular change of lens parameters in thicker lens. When the subjects wore silicone hydrogel lenses after drying and rehydrating, their NIBUTs were decreased and blink rates were increased regardless of lens material or thickness. In addition, repetitive drying of silicone hydrogel lenses affected the lens fitting. Therefore, subjective symptoms such as itching, pain, irritation, foreign body sensation, dryness tended to be increased. Conclusions: The results obtained from the study may suggest to develop durable silicone hydrogel contact lenses against dry environment since the changes in parameters of silicone hydrogel lens and the subjective discomfort were observed after repetitive drying and rehydration.

• Journal of Korean Academy of Nursing
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• v.33 no.3
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• pp.433-439
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• 2003

Purpose: The purpose of this study was to examine the relationship among subjective symptoms, depression, and stress coping behavior of university students. Method: The survey was carried out on a convenience sample of 298 university students. The questionnaire consisted of each scale for symptoms, depression, and stress coping behaviors. Data analysis procedure included the factor analysis for stress coping behaviors, and the correlation analysis describing a relationship among symptoms, depression, and stress coping behaviors. Result: There were significant correlations between depression and the three types of symptoms: general, psychological, and somatic symptom. Subjects using the negative-emotional-response coping and the self-control coping showed a more severe depression, and those using the problem-solvingㆍreappraisal coping and the positive-emotional-response coping showed a milder depression. Subjects using the negative-emotional-response coping complained of all 3 types of symptoms severely, and those using the positive-emotional-response coping complained of general symptoms mildly. Of five stress coping methods, the negative-emotional-response and the positive-emotional-response coping methods were related to both symptoms and depression significantly. Conclusion: This study suggests that the emotional-oriented coping method has more important role for university student’s depression and their subjective symptoms than the problem-oriented coping or social supports seeking coping. Further study needs to be conducted to help students effective coping mechanism for good mental health. Also it is necessary for university students to recognize that their symptoms are associated with depression.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.1
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• pp.493-505
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• 2017

This study examined the relationships between health behavior, premenstrual coping, premenstrual syndrome symptoms, and subjective happiness of female college students. The data were collected through self-report questionnaires between March 7 and April 20, 2016. Participants were comprised of a convenience sample of 122 female college students. Stepwise multiple regression analysis revealed subjective health status (${\beta}=.23$, p<.011), premenstrual syndrome symptoms (${\beta}=-.22$, p<.012), and average length of menstrual period (${\beta}=-.17$, p<.044) to be significant predictors of subjective happiness in female college students. These variables accounted for 14.0% of subjective happiness scores. It is meaningful that premenstrual syndrome symptoms and average length of menstrual period affected the subjective happiness in female college students. Therefore, to facilitate subjective happiness in female college students, efficient management and intervention regarding premenstrual syndrome symptoms and general health are required.

• The Journal of the Convergence on Culture Technology
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• v.6 no.4
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• pp.259-266
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• 2020

This study is a descriptive research for understanding the health behaviors, job stress, and musculoskeletal subjective symptoms of university employees, and also for examining the influence factors having effects on the musculoskeletal subjective symptoms. Targeting total 158 university employees, the data was collected from July to August 2020. In the results of this study, the characteristics related to health behaviors showed the percentages like the rate of drinking(68.6%), rate of smokers(9.6%), rate of exercising three times or more a week(15.4%), and the rate of regular eating habit(64.7%). The mean score of job stress was 63.7. The musculoskeletal disease symptom group falling under the occupational musculoskeletal subjective symptom standard of NIOSH was 18.6%, and the musculoskeletal subjective symptom of shoulders showed the highest rate. Also, the 29.5% of research subjects responded that the cause for their musculoskeletal pain was work. As the factors having effects on the musculoskeletal subjective symptoms, the sex, age, career experience, and job stress had significant effects on the subjective symptom of shoulder part(p<.01) while the regular exercise had significant effects on the subjective symptom of waist(p<.05). The educational background and regular meals had significant effects on the subjective symptom of legs and knees(p<.05). Thus, in order to prevent the musculoskeletal diseases of university employees, it would be necessary to develop/apply the programs for the relief of job stress, regular exercise, and regular meals.