. Author manuscript; available in PMC: 2016 May 24.

Published in final edited form as: Obes Surg. 2015 Jan;25(1):191–194. doi: 10.1007/s11695-014-1478-5

Table 1.

Demographic, pre-surgical, and post-surgical differences based on insurer type

		Medicaid (n=412) % or (M±SD)	Medicare (n=536) % or (M±SD)	Private insurance (n=1605) % or (M±SD)	Statistical test
Sex	Female	87.7 %	76.7 %	80.4 %	X²(2)=12.0^*
	Male	14.3 %	23.3 %	19.6 %
Race	Caucasian	92.0 %	97.4 %	98.3 %	X²(10)=57.9^**
	African American	5.6 %	2.4 %	1.4 %
	Other races	2.4 %	0.2 %	0.3 %
Age (years)		39.9±9.9	52.9±11.5	45.0±10.1	F(2, 2552)=197.7^**
BMI at consultation (kg/m²)		52.1±10.4	49.9±9.4	48.9±8.1	F(2, 2552)=22.2^**
Time to surgery (days)		368.7±220.1	344.3±213.8	320.0±176.3	F(2, 2552)=11.7^**
Pre-surgical weight loss (lb)		15.0±18.5	15.2±18.6	14.7±17.5	F(2, 2552)=63.8^a
Length of post-surgical hospital stay		2.7±3.1	3.2±4.6	2.4±3.1 (n=1602)	F(2, 2549)=10.2^**
Percent of excess weight loss nadir		78.0±25.0 (n=185)	74.2±25.4 (n=278)	77.6±24.0 (n=901)	F(2, 1363)=2.2^a

p<0.05

^**

p<0.001

Non-significant