工伤总估校正发生率及工伤发生时间分析

ASCERTAINMENT CORRECTED INCIDENCE RATESAND TEMPORAL FACTORS RELATEDTO OCCUPATIONAL INJURY

为完整地了解总的工伤发生率，探讨工伤发生的时间分布规律，在某厂调查了１９８８～９１年工伤发生情况。用俘获——再俘获（Ｃ－Ｍ）方法估计总的工伤发生率。结果表明，若按安环科登记的工伤记录，四年共发生工伤２００人次，粗发生率为１０．０‰；但是，若用安环科和卫生科两个来源收集到的工伤人次数，以Ｃ－Ｍ的方法估计，总的工伤发生人次数为５３３，总估校正发生率为２６．７‰。安环科工伤登记的工伤仅是全部工伤的５０．７％，漏记率为４９．３％。工伤发生率在年龄小于２０岁和工龄小于５年的最高．工伤多发生在一年中的第三季度和三月份；一星期中，周一工伤最多；一天中工伤发生在早班最多，占５８．２％，而发生在工作后１—２小时之间也最多，占２３．７％，上午９—１０点之间是工伤发生最多的时段（占１７．５％）。

To ascertain incidence and describe temporal distribution of occurence of occupational injury(OI), a restrospective cohort study from 1988 -- 1991 was conducted. The annual crude incidence was 1. 00% and ascertainment corrected incidence rate was 2. 67 % (95 %CI: 2. 01 -- 3.26%) when using Capture -- Recapture (CR) methods. Summer and early time at beginningwork after break were the temporal' risk factors related to OI.