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Table 2 Mean values of BMI at different ages and of BMI changes by categories of current BMI among controls

From: Weight and weight changes throughout life and postmenopausal breast cancer risk: a case-control study in France

  Current BMI (kg/m2)   
  <25 25-30 ≥30 p a Pearson rb
(n = 428) (n = 245) (n = 141)
Mean current BMI (kg/m2) (sd) 22.0 (1.9) 27.2 (1.4) 34.2 (4.2) <10-4 1.00
Mean BMI at age 50 (kg/m2) (sd) 21.4 (2.3) 24.7 (2.6) 29.8 (4.6) <10-4 0.79
Mean BMI at age 20 (kg/m2) (sd) 20.1 (2.3) 20.9 (2.6) 22.5 (3.2) <10-4 0.32
Mean BMI change from age 20 to current age (kg/m2) (sd) 1.9 (2.8) 6.3 (2.9) 11.8 (5.1) <10-4 0.86
Mean BMI change from age 20 to 40 (kg/m2) (sd) 0.6 (2.4) 2.3 (2.3) 4.6 (4.7) <10-4 0.54
Mean BMI change from age 40 to 50 (kg/m2) (sd) 0.6 (1.7) 1.5 (2.2) 2.9 (4.4) <10-4 0.32
Mean BMI change from age 50 to current age (kg/m2) (sd) 0.6 (2.0) 2.5 (2.5) 4.5 (4.7) <10-4 0.55
  1. a P-value of ANOVA
  2. bPearson correlation coefficient with current BMI