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Table 1 Clinical and demographic features of the study participants

From: Genetic determinants of sporadic breast cancer in Sri Lankan women

Variable

Cases

(n = 349)

Controls

(n = 348)

P-value

aMean age (years) b[SD]

60 [7]

74 [6]

0.001

Mean age at menarche (years) [SD]

14 [2]

14 [2]

0.81

Mean age at first pregnancy (years) [SD]

26 [7]

25 [6]

0.007

Mean number of children [SD]

3 [2]

4 [3]

0.001

Mean age at menopause (years) [SD]

48 [4]

47 [6]

0.003

Mean body mass index (kg/m2) [SD]

25 [4]

23 [4]

0.001

  1. a[Cases – age at diagnosis of cancer; Controls – age at recruitment]
  2. bStandard deviation