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Table 2 Hazard ratio (HR) and 95% CI for onset of adrenarche, thelarche, pubarche and menarche among Bangladeshi, British-Bangladeshi and white British girls

From: A migrant study of pubertal timing and tempo in British-Bangladeshi girls at varying risk for breast cancer

  Adrenarche Thelarche Pubarche Menarche
  Number HR 95% CI Number HR 95% CI Number HR 95% CI Number HR 95% CI
Unadjusted resident group             
Bangladeshi 165 1.0   168 1.0   162 1.0   168 1.0  
British-Bangladeshi 162 0.9 0.6, 1.3 159 1.6 1.1, 2.4 165 1.5 1.0, 2.3 174 1.4 0.8, 2.4
White British 50 1.0 0.6, 1.7 48 2.6 1.5, 4.4 49 2.0 1.1, 3.7 54 0.9 0.4, 2.1
P-trend   0.71    <0.01    <0.001    0.70  
Resident group, adjusted for BMI             
Bangladeshi 158 1.0   163 1.0   158 1.0   165 1.0  
British-Bangladeshi 147 0.7 0.5, 1.1 149 1.1 0.7, 1.8 154 1.6 1.0, 2.7 156 1.0 0.5, 1.9
White British 46 0.9 0.5, 1.5 46 1.7 1.0, 3.1 47 2.2 1.1, 4.1 50 0.6 0.3, 1.6
P-trend   0.17    0.20    0.02    0.23  
  1. A higher HR indicates an earlier age at onset compared with the Bangladeshi reference group. BMI, body mass index.