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Table 5 Odds ratios of spontaneous abortion among generalised estimate equation of all pregnancies stratified by year of conception

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

Year of conception The job held longest Pregnancy SA Crude GEE Adjusted GEEa
(N = 4037) (N = 529) OR (95% CI) OR (95% CI)
≤2008 FAB 848 80 (9.4) 1.62 0.75–3.49 1.54 0.71–3.32
PKG 505 69 (13.7) 2.31 1.06–5.02 2.21 1.01–4.81
Clerical worker 139 8 (5.8) 1.0   1.0  
≥2009 FAB 1466 211 (14.4) 0.98 0.68–1.40 1.01 0.69–1.48
PKG 867 130 (15.0) 1.03 0.71–1.49 1.05 0.71–1.55
Clerical worker 212 31 (14.6) 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. Values displaying significant differences are shown in bold (p-value ≤ 0.05)
  4. aAdjusted for age, BMI, education, smoking, duration of employment, study plant