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Table 2 The characteristics and weight loss outcomes for higher attenders (n = 478,772) and lower attenders (n = 877,333). Higher attenders are defined as those who attended ≥75 % of the 14 sessions of the observation period. Lower attenders are those who attended ≤75 % of sessions

From: Weight outcomes audit in 1.3 million adults during their first 3 months’ attendance in a commercial weight management programme

  Higher attenders n = 478,772 Lower attenders n = 877,333   
  Average SD Average SD t-value p-value
Height (m) 1.65 0.08 1.65 0.07 1.04 0.300
Weight (kg) 89.9 19.0 87.6 18.6 62.89 <0.001
Age (years) 44.6 13.8 41.1 13.3 139.44 <0.001
Weight change (kg) –6.8 3.6 –2.3 2.4 –817.55 <0.001
Weight change (%) –7.5 3.5 –2.7 2.6 –870.14 <0.001
Attendance (wks) 12.5 1.1 5.1 2.9 1646.67 <0.001
Start BMI (kg/m2) 33.2 6.3 32.3 6.2 66.47 <0.001
End BMI (kg/m2) 30.7 6.0 31.4 6.2 –73.71 <0.001
BMI change (kg/m2) –2.5 1.3 –0.9 0.9 –839.85 <0.001