Table 2 Observed (O) and expected (E) cases of childhood leukaemia living less than 20 km away from one of the 29 nuclear sites in France (1990–1998), with SIR and their 95% CI, according to age and distance from the nuclear sites

From: Incidence of childhood leukaemia in the vicinity of nuclear sites in France, 1990–1998

Age (years)

 

0–5 km

5–10 km

10–15 km

15–20 km

Total

0–4

 

O

39

95

114

117

365

 

E

40.04

92.93

136.33

119.27

388.56

 

SIR

0.97

1.02

0.84

0.98

0.94

 

95% CI

(0.69–1.33)

(0.83–1.25)

(0.69–1.00)

(0.81–1.18)

(0.85–1.04)

5–9

 

O

18

38

64

62

182

 

E

21.68

49.89

71.32

67.64

210.52

 

SIR

0.83

0.76

0.90

0.92

0.86

 

95% CI

(0.49–1.31)

(0.54–1.05)

(0.69–1.15)

(0.70–1.18)

(0.74–1.00)

10–14

 

O

8

32

42

41

123

 

E

13.39

31.48

43.12

42.01

130.00

 

SIR

0.60

1.02

0.97

0.98

0.95

 

95% CI

(0.26–1.18)

(0.70–1.44)

(0.70–1.32)

(0.70–1.32)

(0.79–1.13)

  1. SIR=standardised incidence ratio; 95% CI=95% confidence interval.