Table 4. Six Proportional Hazards Models of Time to Hospitalization (Preventable and Non-Preventable) (n = 1219).

		Adjustedb Hazard Ratios (95% Confidence Interval)
Modela	Continuity of Care	Non-preventable Hospitalizationc	Preventable Hospitalizationc
1	Patient-Reported Affective Continuityd
	Middle Tertile (15–16)	0.80 (0.63,1.00)	0.61* (0.41,0.91)
	Highest Tertile (17–19)	0.95 (0.79,1.14)	0.67* (0.49,0.92)
2	Claims-Based Herfindahl Indexd
	Middle Tertile (0.26–0.49)	0.87 (0.72,1.04)	1.52† (1.11,2.09)
	Highest Tertile (≥0.50)	0.89 (0.72,1.10)	1.37 (0.93,2.02)
3	Claims-Based Current Provider of Care (discounted)d
	Middle Tertile (0.27–0.58)	0.79* (0.65,0.96)	1.26 (0.90,1.75)
	Highest Tertile (≥0.59)	1.00 (0.82,1.23)	1.21 (0.84,1.75)
4	Claims-Based Modified, Modified Continuity Indexd
	Middle Tertile (0.53–0.75)	1.07 (0.87,1.32)	1.50* (1.01,2.21)
	Highest Tertile (≥0.76)	1.25* (1.02,1.54)	1.64† (1.11,2.44)
5	Claims-Based Ejlertsson's Index Kd
	Middle Tertile (0.46–0.71)	0.91 (0.73,1.13)	1.48 (0.98,2.24)
	Highest Tertile (≥0.72)	1.09 (0.88,1.35)	1.74† (1.15,2.61)
6	Claims-Based Modified Continuity Indexd
	Middle Tertile (0.38–0.63)	1.03 (0.83,1.28)	1.67* (1.10,2.53)
	Highest Tertile (≥0.64)	0.99 (0.78,1.25)	1.16 (0.74,1.80)

* p<.05;

^†p<.01.

^aEach model includes the named CoC measure and the covariates.

^bAdjusted for all predisposing, enabling, and need characteristics, and health service utilization factors.

^cA preventable hospitalization is defined as any hospitalization for an ACSC; Hospitalizations that are not for an ACSC are considered not preventable.

^dReference category is the lowest tertile of scores.