Weight Loss Outcomes following Roux-en-Y Gastric Bypass and Sleeve Gastrectomy in an Ethnically Diverse Bariatric Population: Which Is More Effective?

Table 2

Results of the mixed-effects model (type III F-test, outcome = % of excess weight loss).

Group 1				Group 2				Group 3
Effect	Num DF	Den DF	F-test	value	Num DF	Den DF	F-test	value	Num DF	Den DF	F-test	value
Procedure	2	1422	41.78	<0.0001	2	520	40.60	<0.0001	2	536	28.37	<0.0001
Age	1	1422	9.46	0.0021	1	520	0.40	0.5249	1	536	4.12	0.0428
Sex	1	1422	0.38	0.5363	1	520	22.40	<0.0001	1	536	3.44	0.0643
Race	2	1422	3.09	0.0559	2	520	3.21	0.0410	2	536	2.65	0.0716
Diabetes	1	1422	21.22	<0.0001	1	520	2.75	0.0979	1	536	4.69	0.0308
Hypertension	1	1422	9.47	0.0021	1	520	1.58	0.2094	1	536	6.43	0.0115
Time after surgery	5	3663	46.09	<0.0001	5	1315	37.82	<0.0001	5	1455	22.88	<0.0001

Num DF: number of degrees of freedom in the model, Den DF: number of degrees of freedom associated with the model errors.