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Table 1 Mean weight (kg) and BMI by age and gender

From: Changes in body mass index by age, gender, and socio-economic status among a cohort of Norwegian men and women (1990–2001)

   Mean (SD)   Mean (SD) Mean change (SD)
   1990   2001 1990–2001¶
  N Weight (kg) BMI   Weight (kg) BMI Weight (kg) BMI
Men     Men     
   20–29 123 76.0 (10.9) 23.6 (2.9)    20–29 84.0 (13.9) 26.1 (3.9) 8.0 (8.6) 2.5 (2.5)
   30–39 176 80.0 (11.2) 24.4 (2.9)    30–39 85.9 (12.6) 26.2 (3.3) 5.9 (5.5) 1.8 (1.7)
   40–49 135 81.5 (10.9) 25.2 (2.7)    40–49 86.0 (12.3) 26.6 (3.2) 4.5 (6.1) 1.4 (1.9)
   50–66 109 80.1 (10.4) 25.5 (3.4)    50–66 82.9 (11.9) 26.4 (3.8) 2.8 (7.2) 0.9 (2.3)
   67–79 38 77.7 (11.4) 25.4 (3.4)    67–79 78.6 (11.5) 25.7 (3.6) 0.9 (6.7) 0.3 (2.1)
Total 581 79.4 (11.1) 24.7 (3.0) Total 84.5 (12.7) 26.3 (3.5) 5.1 (7.1) 1.6 (2.2)
Women     Women     
   20–29 148 61.7 (11.3) 21.8 (3.5)    20–29 68.6 (13.0) 24.2 (4.0) 6.9 (7.5) 2.4 (2.7)
   30–39 189 61.5 (8.7) 22.1 (2.7)    30–39 67.0 (10.4) 24.0 (3.4) 5.5 (5.4) 2.0 (1.9)
   40–49 123 64.7 (10.7) 23.5 (3.7)    40–49 70.0 (11.9) 25.5 (4.3) 5.3 (7.1) 2.0 (2.6)
   50–66 104 65.5 (12.2) 24.3 (4.0)    50–66 67.7 (12.0) 25.1 (4.0) 2.2 (6.3) 0.9 (2.3)
   67–79 24 68.0 (12.4) 25.4 (3.8)    67–79 67.0 (12.0) 25.1 (3.7) -1.0 (4.5) -0.3 (1.7)
Total 588 63.2 (10.7) 22.8 (3.6) Total 68.1 (11.8) 24.6 (3.9) 5.0 (6.8) 1.8 (2.4)
  1. BMI, body mass index; kg, kilograms.
  2. ¶ Age at year 2001 used in formula.