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一、调查对象砂轮磨光工(振动作业组)108名。其中振动性白指患者R(+)组24名,非白指患者R(-)组84名。男性25名,女性83名;年令17～56岁,平均36.6岁;振动作业工令9个月～27年,平均10.2年。以车工、钳工、机修工等不接触振动的健康工人54名作为对照组,其中男37人、女17人;年令18～54岁,平均32.7岁;工令1—27年,平均11.5年。另选基本不从事体力劳动的健康教职工14名,作为某些观察项目的对照比较。
First, the investigation object Grinder (vibration operation group) 108. Vibrating white refers to 24 patients in R (+) group and 84 patients in R (-) group. 25 males and 83 females; aged 17 to 56 years, an average of 36.6 years old; vibration work order from 9 months to 27 years, an average of 10.2 years. In order to car workers, fitter, mechanics and other non-vibration health workers 54 as a control group, of which 37 were males and 17 females; years 18 to 54 years old, an average of 32.7 years; workers make 1-27 years, an average of 11.5 years . In addition, 14 health workers who basically did not engage in manual labor were selected as a comparison of some observation items.