title: [Methodology for controlling healthy worker effect on coal miners' mortality].
abstract: This paper reports how to control the healthy worker effect (HWE) in a mortality study of coal miners. We used four methods, namely (1) age-specific corrective coefficient, (2) proportional mortality ratio (PMR), (3) corrective standarized mortality ratio (CSMR), and (4) a control group composed of factory workers. The results showed that all these methods could control HWE, and the total mortality in the coal miner group was significantly higher than that of the general population group (P < 0.05). However, the best way for controlling HWE awaits further studies.
authors.affiliation: Hospital of Prevention and Treatment of Occupational Diseases, Chengdu.
authors.forename: R
authors.initials: R
authors.lastname: Qiao
authors.forename: M
authors.initials: M
authors.lastname: Wang
authors.forename: Z
authors.initials: Z
authors.lastname: Wang
mesh_terms: D000328:Adult; D000368:Aged; D002681:China / Q000453:epidemiology; D003032:Coal Mining; D015331:Cohort Studies; D015989:Healthy Worker Effect; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000401:mortality*; D008297:Male; D008875:Middle Aged; D012131:Respiratory Insufficiency / Q000401:mortality*