. Author manuscript; available in PMC: 2013 May 13.

Published in final edited form as: Obes Surg. 2011 Oct;21(10):1564–1569. doi: 10.1007/s11695-010-0283-z

Table 3.

Hierarchical regression analyses: 12-month postoperative SF-36 physical health

Variable	ΔR²	Adjusted R²	F	β (standardized) PA frequency as predictor	β (standardized) PA intensity as predictor
Demographic	0.128	0.100	4.61^**
Sex				0.035	0.058
Age				−0.133	−0.126
Ethnicity				−0.053	−0.074
Preoperative BMI				−0.128	−0.144
Preoperative SF-36-PC	0.051	0.146	7.82^**	0.260^**	0.272^**
PA Frequency	0.037	0.178	5.77^**	0.200^*	0.260^**
PA Intensity		0.063	0.205	10.30^**

Sex was coded as 0 (female) or 1 (male). Ethnicity was dichotomized and coded as 1 (white) or 2 (non-white)

BMI body mass index, PA physical activity

p<0.05;

^**

p<0.01;

^***

p<0.001