[Relationship of occupational injuries with social and economic factors].
OBJECTIVE
To explore the relationship of occupational injuries with social and economic factors in chemical industry during 2000.01 - 2001.12.


METHODS
1:2 paired case-control study, univariable logistic regression analysis, principal component analysis, and multiple logistic regression analysis were used in this study.


RESULTS
Univariable analysis showed that occupational injuries had significant relationship with age, sex, education, employment pattern, technology, workplace, work changing, wage, family income, enterprise scale, enterprise proprietorship, projective device, operation rules, and training rules of work safety. The extracted four principal components (PC(1), PC(2), PC(3) and PC(4), ranked by contribution) gave good expressions to the initial 11 variables. The cumulative proportion of the four principal components reached 77.36%. PC(1) was the indicative factor of occupational injuries, which represented 46.69% information of initial variables. PC(2) was the kinetic factor of occupational injuries. PC(3) was the stable factor of occupational injuries. PC(4) was the sex factor of occupational injuries. The results of multiple conditional logistic regression analysis showed that occupational injuries had statistically significant relationship with PC(1) and PC(2). Among the initial variables, sex, employment pattern, income, scale of enterprise, and property of enterprise were more prominent.


CONCLUSIONS
Occupational injuries are related with multiple social and economic factors, which often interact on each other. The prevention and control of occupational injuries should require a comprehensive approach, including training and education of work safety, improving workers' consciousness of self-protection, and enhancing proprietors' consciousness of work safety.
Liu
Xin-rong
XR
Taizhou Center for Disease Control and Prevention, Taizhou, Jiangsu Province 225300, China.
Yang
Jian-guo
JG
Jiang
Wen-zhong
WZ
Shen
Jun
J
Wu
Chang
C
Xia
Zhao-lin
ZL
D000062:Accidents, Occupational; D000328:Adult; D016022:Case-Control Studies; D002681:China; D005260:Female; D006801:Humans; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D016272:Occupational Health / Q000706:statistics & numerical data*; D012959:Socioeconomic Factors; D011795:Surveys and Questionnaires