Table 3.

Final multivariable Cox shared-frailty model estimates for TTR (combined across the imputations with adjustment for confounders of the clinic type effect)

Parameter	Parameter Estimate	HR (95% CI)	P
Arm (PN vs. control)	−0.828756		0.0368
Log (time) x arm interaction	0.216187		0.0085
FQHC vs. AMC	−0.131797	0.88 (0.60, 1.28)	0.4934
Insurance
Private	0.436305	1.55 (1.04, 2.30)	0.0049
Public	0.152104	1.16 (0.78, 1.74)
Uninsured	0.0	1.0
Education
High school	0.395038	1.48 (0.98, 2.25)	0.0606
Some college/Associate’s degree	0.240543	1.27 (0.86, 1.89)
College graduate/Graduate degree	0.419448	1.52 (1.02, 2.28)
< High School	0.0	1.0
Age (5-year increase)	0.03406	1.03 (1.01, 1.06)	0.0133