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Table 1 Baseline characteristics and weight change of men and women1

From: The association between weight loss and engagement with a web-based food and exercise diary in a commercial weight loss programme: a retrospective analysis

  Normal Weight
(BMI 18.5- < 25)
Overweight
(BMI 25- < 30)
Obese
(BMI > 30)
All
Women (n) 816 1150 1015 2979
   Age 32.3 (8.9)2 35.6 (10.3) 37.8 (11.1) 35.5 (10.5)
   Initial BMI 23.2 (1.3) 27.2 (1.4) 35.3 (4.9) 28.9 (5.8)
   Initial weight (kg) 63.6 (6.0) 73.5 (6.8) 94.8 (15.2) 78.0 (16.3)
   Weight loss (kg) 2.1 (2.7) 3.1 (3.8) 5.5 (7.0) 3.7 (5.1)
   Percentage weight loss 3.2 (4.2) 4.2 (5.1) 5.7(6.6) 4.5 (5.5)
Clinically significant
weight loss 3 % (n)
n/a 38.2 (439) 43.5 (442) 40.7 (881)
Men (n) 33 269 340 642
   Age 35.2 (9.6) 37.9 (9.8) 40.6 (10.2) 39.2 (10.1)
   Initial BMI 23.5 (1.4) 27.8 (1.4) 34.3 (3.9) 31.0 (4.7)
   Initial weight (kg) 73.7 (8.7) 88.8 (7.9) 109.6 (15.0) 99.0 (16.9)
   Weight loss (kg) 2.3 (2.3) 4.2 (4.7) 7.1 (7.6) 5.6 (6.5)
   Percentage weight loss 3.0 (3.2) 4.7 (5.4) 6.4 (6.4) 5.5 (5.9)
Clinically significant
weight loss 3 % (n)
n/a 45.4 (122) 49.4 (168) 47.6 (290)
  1. 1 No members had an initial BMI in the underweight range (< 18.5)
  2. 2 Values are means (standard deviations) unless otherwise stated.
  3. 3 > 5% weight loss: overweight and obese participants only.