Table 4.

Adjusted^* association of continuity and composite measures of adverse outcomes stratified by number of chronic conditions.

	<6 Chronic conditions		≥6 Chronic conditions
	Adjusted odds ratio (95% CI)	p	Adjusted odds ratio (95% CI)	p
UPC
Low (Ref)	1.0		1.0
Middle	1.40 (0.49–3.95)	0.530	1.30 (0.83–2.04)	0.257
High	1.51 (0.56–4.10)	0.417	1.46 (0.85–2.51)	0.175
Wald test		0.711		0.340
COC
Low (Ref)	1.0		1.0
Middle	0.93 (0.40–2.19)	0.869	1.35 (0.85–2.15)	0.202
High	0.85 (0.33–2.24)	0.750	1.49 (0.85–2.60)	0.162
Wald test		0.950		0.305
KPC
Low (Ref)	1.0		1.0
Middle	1.81 (0.42–7.83)	0.429	0.51 (0.29–0.93)	0.027
High	0.30 (0.08–1.12)	0.075	0.14 (0.08–0.25)	<0.001
Wald test		0.002		0.003

^*Models also adjusted for baseline age, race, sex, number of chronic conditions, plan enrollment duration, physician visits, occurrence of the adverse event during the baseline period, and state of residence. CI, confidence interval; COC, continuity of care index; KPC, known provider of care index; Ref, reference; UPC, usual provider of care index.