Table 2

Univariate analyses of risk of attrition

Risk factor	Odds ratio	p value
Age, yr	0.99	0.19
Female sex	0.92	0.56
Weight, lb	0.99	< 0.001
Initial BMI	0.95	< 0.001
Type of clinic
Surgical	0.12	< 0.001
Smoking history	1.17	0.18
Active smoking	1.22	0.28
MSK disorder	0.58	< 0.001
Mental illness	1.10	0.39
Depression	1.05	0.63
Bipolar disorder	8.62	< 0.001
Eating disorder	1.22	0.28
Anxiety disorder	0.60	0.09
Anxiety disorder with panic attacks	0.55	0.018
On MH medication^*	0.55	< 0.001
On antidepressants	0.57	< 0.001
On neuroleptics	1.06	0.18