Table 2

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

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)

Notes:

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.

Sung et al. BMC Public Health 2007 7:102   doi:10.1186/1471-2458-7-102