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Table 3 Odds ratios of spontaneous abortion among generalised estimate equation of all pregnancies

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

 

Pregnancy

SA

Crude GEE

Adjusted GEEa

(N = 4037)

(N = 529)

OR

(95% CI)

OR

(95% CI)

The job held longest

 FAB

2314

291 (12.6)

1.12

0.81–1.57

1.12

0.79–1.58

 PKG

1372

199 (14.5)

1.28

0.91–1.81

1.26

0.88–1.79

 Clerical worker

351

39 (11.1)

1.0

 

1.0

 

Age at conception (years)

 ≤29

2965

354 (11.9)

1.0

 

1.0

 

 30–34

951

141 (14.8)

1.25

1.03–1.50

1.28

1.02–1.60

 ≥35

121

34 (28.1)

2.41

1.75–3.33

2.48

1.69–3.64

Duration of employment (years)

 ≤4

872

93 (10.7)

1.0

 

1.0

 

 5–9

1962

268 (13.7)

1.29

1.02–1.63

1.22

0.96–1.54

 ≥10

1203

168 (14.0)

1.37

1.06–1.78

1.06

0.78–1.43

Year of conception

 ≥2009

2545

372 (14.6)

1.0

 

1.0

 

 ≤2008

1492

157 (10.5)

0.73

0.60–0.88

0.84

0.68–1.02

  1. FAB fabrication process worker, PKG package process worker
  2. GEE generalized estimating equation, 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, year of conception, study plant