Table 4.

Summary of Selection Model Analysis: Simple Effects Comparing Outreach to Usual Care in Each Stigma Group and Model Estimated Interaction Between Intervention and Stigma

Logistic regression models	Estimate	Standard error	t-statistic	p value	Odds ratio	Odds ratio confidence interval
						Lower	Upper
Complete data only
Model 1
Outreach versus usual care, low stigma	0.63	0.18	3.57		1.87	1.33	2.64
Outreach versus usual care, high stigma	0.17	0.17	1.00		1.18	0.85	1.64
Intervention by stigma interaction	−0.46	0.24	−1.87	.06	0.63	0.39	1.02
Nonignorable missing response
Model 2
Outreach versus usual care, low stigma	0.63	0.18	3.57		1.87	1.33	2.64
Outreach versus usual care, high stigma	0.17	0.17	1.00		1.18	0.85	1.64
Intervention by stigma interaction	−0.46	0.24	−1.87	.06	0.63	0.39	1.02
Model 3
Outreach versus usual care, low stigma	0.63	0.19	3.35		1.88	1.30	2.72
Outreach versus usual care, high stigma	0.21	0.17	1.25		1.24	0.89	1.72
Intervention by stigma interaction	−0.42	0.25	−1.65	.10	0.66	0.40	1.08
Model 4
Outreach versus usual care, low stigma	0.62	0.17	3.63		1.86	1.33	2.61
Outreach versus usual care, high stigma	0.18	0.17	1.08		1.19	0.87	1.65
Intervention by stigma interaction	−0.45	0.24	−1.86	.06	0.64	0.40	1.03
Model 5
Outreach versus usual care, low stigma	0.63	0.19	3.37		1.87	1.30	2.69
Outreach versus usual care, high stigma	0.19	0.17	1.15		1.21	0.87	1.69
Intervention by stigma interaction	−0.43	0.25	−1.72	.08	0.65	0.40	1.06