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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