Biomedical subjects

Yajia Lan

Publications and source records attributed to Yajia Lan.

6 recordsLinked to original sources

PubMed2006

Mental ability and psychological work performance in Chinese workers.

This study was to explore the relationship among mental ability, occupational stress, and psychological work performance in Chinese workers, and to identify relevant modifiers of mental ability and psychological work performance. Psychological Stress Intensity (PSI), psychological work performance, and mental ability (Mental Function Index, MFI) were determined among 485 Chinese workers (aged 33 to 62 yr, 65% of men) with varied work occupations. Occupational Stress Questionnaire (OSQ) and mental ability with 3 tests (including immediate memory, digit span, and cipher decoding) were used. The relationship between mental ability and psychological work performance was analyzed with multiple linear regression approach. PSI, MFI, or psychological work performance were significantly different among different work types and educational level groups (p<0.01). Multiple linear regression analysis showed that MFI was significantly related to gender, age, educational level, and work type. Higher MFI and lower PSI predicted a better psychological work performance, even after adjusted for gender, age, educational level, and work type. The study suggests that occupational stress and low mental ability are important predictors for poor psychological work performance, which is modified by both gender and educational level.

Adult↗

PubMed2004

Acculturation and smoking behavior in Asian-American populations.

The relationship between acculturation and smoking behavior was examined in four Asian-American groups that included recent immigrants and US-born Koreans, Chinese, Vietnamese and Cambodians residing in the Delaware Valley of Pennsylvania and New Jersey. The study was part of a community-based, comprehensive cross-sectional study designed to assess a broad array of knowledge, attitudes and behaviors on tobacco use and tobacco-related cancer issues in the target multi-ethnic and multi-lingual Asian-American community. The sample of 1374 respondents was selected using a stratified-cluster proportional sampling technique, with a response rate of 83%. Findings indicated that acculturation had a variable effect on smoking behavior: more acculturated youth and less acculturated male adults had higher smoking rates than the less acculturated youth and the more acculturated male adults. Smoking rates for all females were generally lower than those of males regardless of acculturation status; however, acculturated adult females had a higher smoking rate than the less acculturated.

Acculturation↗

PubMed2004

[Appraisal of occupational stress and work ability].

OBJECTIVE: This study was conducted to assess occupational stress and work ability. METHODS: A test of occupational stress and work ability was carry out with revised occupational stress inventory (OSI-R) and work ability index(WAI) for 2270 workers. RESULTS: (1) The occupational stress and strain in male was significantly higher than those in female, but self-care and social support in female werehigher than in male(P < 0.01). The level of occupational stress, strain except interpersonal strain increased with age, while work ability decreased(P < 0.05). (2) Among 6 items of occupational role questionnaire, the score of role boundary and responsibility were obviously higher in college education (P < 0.05). The score of occupational role, psychological strain, physical strain was higher in maried, divorce than unmarried(P < 0.05). (3) The score of occupational role, strain in good work ability category was significantly lower than others, but personal resources were higher(P < 0.05). (4) The correlation of work ability and occupational stress, strain, personal resources were significant(P < 0.01), occupational role and personal strain were positively correlated, both of which correlated negatively to the personal resources(P < 0.01). (5) The major influential factors of personal strain were age, recreation, self-care, social support, rational/cognitive, role insufficiency, role ambiguity and role boundary.

Adaptation, Psychological↗

PubMed2004

[Occupational stress effects on work ability in chemistry workers].

OBJECTIVE: Investigating the status of work ability and occupational stress in 1030 chemistry workers at levels of chemical materials and explore their relationship and influence factors (481 workers of study group, 549 workers of control group). METHODS: Work ability and occupational stress were measured with the work ability index (WAI) and occupational stress questionnaire (OSQ). The risk factors of work ability decline were evaluated. RESULTS: WAI and OSQ scores scores are significantly different between study group and control group (P < 0.01), and work ability correlated inversely with occupational stress (P < 0.01). The WAI scores are reducing with a higher of the OSQ. The work ability of chemistry-workers became lower with the increasing of age. Variables that influence work ability included the factors of disorder of musculoskeletal function (OR = 2.884), assessment of the current health (OR = 2.651), the diseases (OR = 2.498), emotion status (OR = 2.407), physical load (OR = 1.254) and lack of exercise (OR = 1.956). CONCLUSION: The stress levels and stress factors had affected work ability in chemistry-workers, and it was suggested that the findings could be helpful for the measures protecting and promoting of work ability on the health of workers.

Adult↗

PubMed2003

[Relationship between the personal factors and work ability of different work category workers].

OBJECTIVE: To assess the relationship between the personal Factors and work ability of different work category workers. METHODS: A test of work ability in various work category and age group was carried out with work ability index (WAI) for 5648 workers. RESULTS: 1. The score of WAI of physical work, mixed physical and mental work category for female was significantly higher than those for male (P < 0.01), but the score of WAI of mental work category in male was higher than that for female (P < 0.05). 2. Two-way ANOVA for the different sex revealed that the score of WAI of various work category and age group, education category group, work duration Group, marital Status Group was statistically significant difference (P < 0.01). The level of work ability, except that for the age group of 30 yr.- and 40 yr.-, decreased with age (P < 0.05). The score of WAI, except that for the workers of 10 yr.-, and 20 yr.- group, decreased with work duration (P < 0.05). The score of WAI was obviously higher in the secondary and college education category than elementary category (P < 0.05). The score of WAI for the married and divorced was lower than that for the unmarried (P < 0.05). CONCLUSION: Different measures relevant to the influencing factors should be taken to improve the work ability.

Adult↗

PubMed2002

[Study on the relationship between occupational stress and psychological health state among oil workers].

OBJECTIVE: To study the relationship between occupational stress and psychological health state among oil workers. METHODS: 1,230 oil workers in 122 work types of oil industry were selected and written occupational stress questionary(OSQ) and symptom check list (SCL-90). RESULTS: Petroleum workers' psychological health states were poor with increasing occupational stress degree. The scores in physical symptoms(1.87 +/- 0.80, 1.72 +/- 0.70), depression(1.74 +/- 0.76, 1.62 +/- 0.67), horror(1.48 +/- 0.65, 1.39 +/- 0.55) in the high and medium stress group were obviously higher than those in low stress group(1.55 +/- 0.61, 1.43 +/- 0.54, 1.28 +/- 0.46, respectively, P < 0.05). The score of mood state in the high and medium stress group was obviously higher than that in low stress group(P < 0.05). Psychological health states and mood state in the petroleum workers with short service length are significantly poorer than that with long service length(P < 0.01). CONCLUSION: Occupational stress should affect psychological health state of petroleum workers.

Affect↗