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Table 2 Standardized incidence ratios (SIR) with 95% confidence interval (CI), by different types of cancer, 1979–2001

From: Increased standardized incidence ratio of breast cancer in female electronics workers

Cancer Sites Lag Period (years) Observed No. of Cancer Cases Expected No. of Cancer Cases a SIR (95% CI)
Oral Cavity 10 10 13.5 0.74 (0.35–1.36)
Salivary glands 10 4 4.3 0.93 (0.25–2.38)
Nasopharynx 10 25 36.0 0.69 (0.45–1.03)
Esophagus 10 2 1.7 1.16 (0.14–4.20)
Stomach 10 42 47.6 0.88 (0.64–1.19)
Small intestine 10 3 3.0 1.01 (0.21–2.94)
Colon and rectum 10 98 89.3 1.10 (0.89–1.34)
Liver and intrahepatic bile ducts 10 36 45.5 0.79 (0.55–1.10)
Gall bladder and extrahepatic bile ducts 10 1 5.2 0.19 (0.005–1.07)
Pancreas 10 11 6.7 1.64 (0.82–2.94)
Peritoneum and other 10 6 3.4 1.77 (0.65–3.85)
Trachea, bronchus, and lung 10 46 49.9 0.92 (0.67–1.23)
Other parts of respiratory system 10 3 7.8 0.38 (0.08–1.13)
Breast 15 286 263.6 1.09 (0.96–1.22)
Cervix uteri 15 337 352.4 0.96 (0.86–1.06)
Other Parts of Uterus 15 25 25.9 0.96 (0.62–1.42)
Ovary, Fallopian Tube, and Broad Ligament 10 36 43.3 0.83 (0.58–1.15)
Other genital organs 10 7 7.0 0.99 (0.40–2.05)
Kidney and other Urinary Organs 10 15 13.6 1.10 (0.62–1.82)
Bladder 10 3 8.8 0.34 (0.07–1.00)
Skin 10 22 21.3 1.03 (0.65–1.56)
Brain 10 14 13.0 1.07 (0.59–1.80)
Other parts of nervous system 10 2 1.4 1.43 (0.17–5.17)
Thyroid gland 5 59 77.9 0.76 (0.58–0.98)
Bone 10 3 3.2 0.92 (0.19–2.70)
Connective tissue 10 11 8.4 1.31 (0.65–2.34)
Other and unspecified sites 10 24 28.4 0.84 (0.54–1.26)
Leukemia 5 23 29.5 0.78 (0.49–1.17)
All Sites 10 1,311 1,365.4 0.96 (0.91–1.01)
  1. Notes:
  2. aThe expected number of cases amongst the total sample of 63,982 female workers was calculated based upon the age and calendar year-specific incidence rates of the general population.
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