Biomedical subjects

Mian-Zhen Wang

Publications and source records attributed to Mian-Zhen Wang.

9 recordsLinked to original sources

PubMed2006

[Occupational stress and job burnout in doctors].

OBJECTIVE: To investigate the status of job burnout in doctors and its relationship with occupational stress. METHODS: A total of 561 doctors from three provincial hospitals were randomly selected. The Maslach Burnout Inventory-General Survey (MBI-GS) was used to identify job burnout. The occupation stress inventory revised edition (OSI-R) was used to evaluate the level of occupational stress. RESULTS: Surgeon and doctors working in the internal medicine wards scored significantly higher in job burnout than their colleagues (P < 0.05). The 30-40 years of age group scored highest in exhaustion. The score of professional efficacy decreased with age and increased with educational levels. Role overload, responsibility, physical environment, reaction and self-care were major predictors for exhaustion. Role insufficiency, role overload and responsibility were major predictors for cynicism. Role insufficiency, social support and rational/cognitive were major predictors for professional efficacy. CONCLUSION: Maintaining moderate professional duty and responsibility, clearly defining job requirements, enriching leisure activities, and improving self-care ability are important measures to preventing job burnout.

Burnout, Professional↗

PubMed2006

[Evaluating training programs on occupational health and safety: questionnaire development].

OBJECTIVE: To develop a questionnaire to evaluate the quality of training programs on occupational health and safety. METHODS: A questionnaire comprising five subscales and 21 items was developed. The reliability and validity of the questionnaire was tested. Final validation of the questionnaire was undertaken in 700 workers in an oil refining company. RESULTS: The Cronbach's alpha coefficients of the five subscales ranged from 0.6194 to 0.6611. The subscale-scale Pearson correlation coefficients ranged from 0.568 to 0.834 . The theta coefficients of the five subscales were greater than 0.7. The factor loadings of the five subscales in the principal component analysis ranged from 0.731 to 0.855. Use of the questionnaire in the 700 workers produced a good discriminability, with excellent, good, fair and poor comprising 22.2%, 31.2%, 32.4% and 14.1 respectively. Given the fact that 18.7% of workers had never been trained and 29.7% of workers got one-off training only, the training program scored an average of 57.2. CONCLUSION: The questionnaire is suitable to be used in evaluating the quality of training programs on occupational health and safety. The oil refining company needs to improve training for their workers on occupational health and safety.

Education↗

PubMed2005

[Study on relationship between fatigue and work ability in chemistry workers].

OBJECTIVE: Explore the relationship between fatigue and work ability in 976 chemistry workers. METHODS: A test of fatigue and work ability was carried out with fatigue scale and work ability index (WAI) for 976 workers, other influence factors of the work ability (such as work environment, labor load, job factors) were investigated with questionnaire. RESULTS: (1) The frequency of fatigue of the unmarried workers was significantly lower than that of the married workers and other marital status workers, while the score of WAI of the unmarried was significantly higher than that of those( P < 0.05); (2) the frequency of fatigue of the mental workers was significantly lower than that of the mixed physical and mental workers, while the score of WAI of the mental workers was significantly higher than that of physical workers and mixed physical and mental workers ( P < 0.05); (3) compared with the workers free of fatigue, the other workers had lower WAI scores; (4) the fatigue score correlated negatively to the WAI score (r = -0.499, P < 0.01); (5) Cumulative odds model analysis showed that after controlling the other risk factors, fatigue was an important risk factor of work ability (OR = 4.005). CONCLUSIONS: Fatigue has affected work ability in chemistry workers, the frequency of fatigue is higher, the score of WAI is lower.

Adult↗

PubMed2005

[Study on relationship between coping resources and strain in mental workers].

OBJECTIVE: To study the effects of mental workers' coping resources on their strain. METHODS: Strain (vocational strain, psychological strain, interpersonal strain, physical strain) and coping resources (recreation, self-care, social support, rational coping) were measured on 3379 mental workers with personal strain questionnaire (PSQ) and personal resources questionnaire (PRQ). RESULTS: There existed significantly negative correlations between PRQ and PSQ (P < 0.01). In PRQ, social support (SS) and rational coping (RC) had the closest relationships with PSQ. In the items of SS, those related to feeling support had more remission on strain. In the items of RC, those related to reasonable arrangement of time and anti-interference had more remission on strain. In the items of recreation (RE), those related to self-determination had more effects on the remission of strain, while indulging in watching TV could cause the strength of strain, and there was a positive correlation between watching TV and strain (P < 0.01). In the items of self-care (SC), sufficient sleeping had the most effects on the remission of strain in the all 40 items of PRQ, while not being immersed in contemplation had a positive correlation with strain (P < 0.01). CONCLUSION: Enhancing coping resources, especially sufficient sleeping, feeling support and reasonable arrangement of time, were the important measures for the remission of mental worker' strain.

Adaptation, Psychological↗

PubMed2005

[On the association of tumor necrosis factor-alpha gene polymorphisms with the susceptibility to silicosis].

OBJECTIVE: To find out whether -308 and -238 locus (G --> A) mutation within the tumor necrosis factor-alpha gene (TNF-alpha) promoter region are associated with susceptibility to silicosis in the Han population of southwest China. METHODS: Governed by the principles of voluntatiness and cooperation, 75 patients with silicosis and 137 control with silica-exposure but without silicosis were recruited, and additionally, 140 elderly patients with silicosis and 135 healthy elderly (retired) controls were recruited in this case-control study. 5 ml peripheral vein blood was drawn from each subject. By means of polymerase chain reaction-restriction fragment length polymorphisms (PCR-RFLP) and sequencing techniques, TNF-alpha gene polymorphisms of all subjects were analyzed. RESULTS: The frequencies of TNF-alpha -308A and -238A in the 75 patients with silicosis were higher than those in the 137 controls (P < 0.01). After being adjusted for confounding factors, the -308A and the -238A were still associated with the presence of silicosis (P < 0.01). But the frequency of TNF-alpha -308A in the 140 elderly patients was significantly lower than that in the controls (P < 0.001). CONCLUSIONS: TNF-alpha gene -308 and -238 locus (G --> A) mutation might be related to the occurrence of silicosis and the severity of pulmonary fibrosis in silicosis among the Han population of southwest China, and TNF2 (-308A) allele might increase the risk of the disease.

Adult↗

PubMed2005

[The relationship between the concentration of TGF-beta1 in serum and its gene polymorphisms in CWP].

OBJECTIVE: To study the relationship between the concentration of TGF-beta1, in serum and its gene polymorphisms in CWP. METHODS: 101 cases of coal worker's pneumoconiosis (CWP)were selected. And the peripheral vein blood samples were collected from them. The concentration of TGF-beta1 of their serum were detected with the TGF-beta1 ELISA kit. And their TGF-beta1 gene -509 site polymorphisms were analyzed with the polymerse chain reaction-restriction fragment length polymorphisms (PCR-RFLP) techniques. RESULTS: The mean value of TGF-beta1, concentration in serum of T/T, C/T and C/C gene type group were 90 ml, 60 ml and 55.960 +/- 28.833 ng/ ml respectively. Significant differences were observed within the three groups (P<0.05). The differences of the mean value of TGF-beta1, concentration in serum in various work years groups, age groups and in the groups with different stage of pneumoconiosis were not significant (P > 0.05). CONCLUSION: The correlative relationship between the concentration of transforming growth factor I (TGF-beta1) in serum and its gene -509 site polymorphisms might be occurring.

Coal Mining↗

PubMed2005

[Analysis on the incidence and relevant risk factors of campus violence among college students].

OBJECTIVE: To study the incidence and risk factors of campus violence and to provide evidence for preventing campus violence among college students. METHODS: 5300 college students in two universities in a province of China were selected to participate in the study and were interviewed with questionnaires. Logistic regression was used for data analysis. RESULTS: (1) In total, 3910 useable questionnaires were gathered to show a response rate of 73.77%. 17.98% of the college students reported they had ever experienced campus violence in the last one year. 29.60% of the male students experienced campus violence so as 7.27% of the female students. The incidence of violence among male students was significantly higher than those of female students (chi2 = 329.89, P = 0.000). (2) Among male students who were victims of campus violence, the incidence rates of threat or blackmail, emotional abuse, physical assault, verbal sexual harassment, sexual assault were 18.03%, 13.97%, 10.77%, 0.85%, 0.48% respectively. Among female students who were victims of campus violence, the incidence rates were 3.64%, 5.84%, 1.38%, 1.33%, 1.13% respectively. The main source of the violence was from their schoolmates. (3) 10.40% of the male students reported they were perpetrators of campus violence in the last year, while 1.47% of the female students reported so. Schoolmates were the main subjects of their aggressive behaviors. (4) Among the college students who were victims of campus violence, logistic regression analysis revealed that smoking, drinking alcohol, frequently getting computer online were important risk factors. The OR values were 1.48, 2.96, 1.66 respectively. Among college students who were perpetrators of campus violence, the OR values were 2.92, 1.88, 2.09 respectively. CONCLUSION: Campus violence among college students was serious, suggesting that intervention measures should be taken.

China↗

PubMed2004

[Norm study of occupational stress on the professionals in Chengdu and Chongqing area].

OBJECTIVE: To establish the norm of occupational stress on the professionals in Chengdu and Chongqing area. METHODS: According to the "Occupation Sorting Canon in the People's Republic of China", the professionals of the above-mentioned area were sorted out and randomly stratified. The normative data were derived from a sample of 2 064 participants. The modified Occupation Stress Inventory Revised Edition (OSI-R) was used to test the targets' occupational stress level (including stressors, strain and coping resources). RESULTS: (1) In these professionals, the sex ratio was about 1:1, average age (36.4 +/- 9.4) years, average length of service (15.9 +/- 10.0) years, 63.07% people were college educated and over 80% married. (2) Descriptive statistics for OSI-R scale scores for the total normative sample, for gender samples and for occupational group samples were modulated. (3) The gender norm showed that there were heavier role overload and stronger occupational strains in males than those in females (P < 0.01). The score of personal resources in the males was not different from that in females (P > 0.05). (4) In terms of different occupations, the scores of occupational role and personal strain among various groups indicated significant differences (P < 0.01). The score of personal resources did not manifest difference (P > 0.05). (5) The major factors influencing OSI-R were sex, occupation and length of service. CONCLUSION: The norm established can basically represent the occupational stress on professionals in Chengdu and Chongqing area.

Adult↗

PubMed2004

[The scale and application of the norm of occupational stress on the professionals in Chengdu and Chongqing area].

OBJECTIVE: To establish the scale of the norm of occupational stress on the professionals and put it into practice. METHODS: T scores were linear transformations of raw scores, derived to have a mean of 50 and a standard deviation of 10. The scale standard of the norm was formulated in line with the principle of normal distribution. RESULTS: (1) For the occupational role questionnaire (ORQ) and personal strain questionnaire (PSQ) scales, high scores suggested significant levels of occupational stress and psychological strain, respectively. T scores >/= 70 indicated a strong probability of maladaptive stress, debilitating strain, or both. T scores in 60 approximately 69 suggested mild levels of maladaptive stress and strain, and in 40 approximately 59 were within one standard deviation of the mean and should be interpreted as being within normal range. T scores < 40 indicated a relative absence of occupational stress or psychological strain. For the personal resources questionnaire (PRQ) scales, high scores indicated highly developed coping resources. T scores < 30 indicated a significant lack of coping resources. T scores in 30 approximately 39 suggested mild deficits in coping skills, and in 40 approximately 59 indicated average coping resources, where as higher scores (i.e., >/= 60) indicated increasingly strong coping resources. (2) This study provided raw score to T-score conversion tables for each OSI-R scale for the total normative sample as well as for gender, and several occupational groups, including professional engineer, professional health care, economic business, financial business, law, education and news. OSI-R profile forms for total normative samples, gender and occupation were also offered according to the conversion tables. CONCLUSION: The norm of occupational stress can be used as screening tool, organizational/occupational assessment, guide to occupational choice and intervention measures.

China↗