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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.