Table 2 Birth weight distribution by weight strata, IL and hospital-based controls, Brazil, 1999–2005

From: High birth weight as an important risk factor for infant leukemia

  

All IL

ALL

AML

Birth weight

Hospital-based

 

Crude

Adjusted a

 

Crude

Adjusted a

 

Crude

Adjusted a

(in g)

controls

n

OR (95% CI)

OR (95% CI)

n

OR (95% CI)

OR (95% CI)

n

OR (95% CI)

OR (95% CI)

<2500

74

16

0.87 (0.42–1.79)

0.88 (0.41–1.86)

11

0.86 (0.36–1.99)

0.99 (0.41–2.42)

5

0.91 (0.25–3.12)

0.74 (0.21–2.55)

2500–2999

121

30

1.00

1.00

21

1.00

1.00

9

1.00

1.00

3000–3499

150

81

2.18 (1.31–3.63)

1.23 (1.04–1.46)

57

2.19 (1.18–2.93)

1.24 (1.02–1.50)

24

2.15 (0.91–5.20)

1.20 (0.91–1.58)

3500–3999

72

62

3.47 (1.00–6.08)

1.29 (1.12–1.48)

46

3.68 (1.96–6.96)

1.30 (1.11–1.52)

15

2.80 (1.08–7.36)

1.23 (0.98–1.55)b

>3999

23

13

2.28 (0.96–5.37)

1.20 (1.02–1.43)c

13

3.26 (1.32–8.01)

1.31 (1.09–1.57)d

—

  
  1. ALL=acute lymphoblastic leukaemia; AML=acute myeloblastic leukaemia; CI=confidence interval; IL=infant leukaemia; OR=odds ratio.
  2. aAdjusted for sex, income, maternal age, pesticide exposure and hormonal intake during pregnancy.
  3. bχ2 for trend=5.51, P=0.018.
  4. cχ2 for trend=16.70, P=0.00004.
  5. dχ2 for trend=18.14, P=0.00002.
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