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Table 2 Familial risk of developing cancer (all sites) among lung cancer case families and control families

From: Increased risk of cancer among relatives of patients with lung cancer in China

 

Case

Control

 

Cancers (no.)

Families (no.)

Relativesa (no.)

Ageb (M)

Families (no.)

Relativesa (no.)

Ageb (M)

ORc (95% CI)

0

518

2369

 

627

2598

  

1

209

902

62.2

143

814

61.8

1.67** (1.22–2.01)

2

51

251

61.0

22

112

60.2

2.56** (1.44–4.29)

3

21

95

62.2

7

37

63.1

3.50** (1.36–10.02)

4+

4

36

62.4

1

17

63.2

5.91 (0.79–132.10)

  1. ** p < 0.01
  2. a Excludes probands and spouses.
  3. b Mean age of members living with or deceased from cancer.
  4. c Represents familial risk of case families, not individual risk, after adjusting for family size, total smoky coal exposure, number of person smoking and commune of residence.