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Table 6 Odds ratios of spontaneous abortion among generalized estimate equation of all pregnancies, limited to female workers whose first, last, and job held longest were the same

From: The relationship between spontaneous abortion and female workers in the semiconductor industry

Category The job matching Pregnancy SA Crude GEE Adjusted GEEa
(N = 3692) (N = 489) OR (95% CI) OR (95% CI)
3 category FAB 2244 285 (12.7) 1.12 0.76–1.64 1.07 0.71–1.60
PKG 1193 175 (14.7) 1.28 0.86–1.91 1.19 0.79–1.81
Clerical worker 255 29 (11.4) 1.0   1.0  
2 category Process workerb 3437 460 (13.4) 1.18 0.81–1.72 1.11 0.75–1.65
Clerical worker 255 29 (11.4) 1.0   1.0  
  1. FAB fabrication process worker, PKG package process worker
  2. GEE generalized estimating equation, SA spontaneous abortion, OR odds ratio, CI confidence interval
  3. aAdjusted for age, BMI, education, smoking, duration of employment, year of conception, study plant
  4. bProcess worker included fabrication process worker and package process worker