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. 2011 Mar 28;4(2):113–120. doi: 10.1159/000327249

Table 1.

The characteristics and weight loss outcomes for completers and non-completers (completers are defined as those who attended for 10 or more of the 12 sessions of the referral period; non-completers are those who attended 9 or fewer sessions)

Completers, n = 19,907
Non-completers, n = 14,364
t-value p-value
average SD average SD
Height, m 1.65 0.09 1.65 0.09 −1.46 0.144
Weight, kg 99.7 20.1 99.0 19.8 −5.32 <0.001
Age, years 49.3 14.4 44.5 14.1 −28.12 <0.001
Weight change, kg −5.5 3.8 −1.8 2.3 95.09 <0.001
Percent weight change −5.5 3.5 −1.8 2.3 99.94 <0.001
Weeks attended 11.5 0.7 5.3 2.6 −292.13 <0.001
Start BMI, kg/m2 36.9 6.5 36.6 6.5 −5.05 <0.001
End BMI, kg/m2 34.9 6.3 36.0 6.4 12.75 <0.001
BMI change, kg/m2 −2.0 1.3 −0.7 0.9 97.81 <0.001