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Table 5 Relative risks for cancer of the thyroid gland

From: Influence of family size and birth order on risk of cancer: a population-based study

 

All

All

  

Birth order *

Ref

 

Family size **

Ref

Cancer site

N

RR (95% CI)

N

N

RR (95% CI)

N

Thyroid gland

      

   papillary

397

0.81 (0.72-0.92)

442

736

0.93 (0.77-1.12)

103

   follicular

58

0.70 (0.52-0.94)

82

116

0.76 (0.50-1.17)

24

   medullary

20

0.81 (0.50-1.32)

23

37

0.92 (0.49-1.74)

6

   other

31

0.85 (0.59-1.24)

45

64

1.17 (0.69-1.98)

12

  1. Reference group: * = first born child, ** = one-child families. Bold type, 95% CI does not include 1.00. Poisson regression adjusted for age, sex, period, region, socioeconomic status.
  2. Ref: reference, N: number of cases