Table 5. Nine Proportional Hazard Models of Time to Death (n = 1,219).

Modela	Continuity of Care	Adjustedb Hazard Ratios (95% Confidence Interval)
1	Patient-Reported Care Site Continuityc	2.25† (1.33,3.81)
2	Patient-Reported Duration Continuityd
	Middle Tertile (7.5–14.5)	0.37‡ (0.24,0.57)
	Highest Tertile (15–16)	0.54† (0.37,0.80)
3	Claims-Based Usual Provider of Cared
	Middle Tertile (0.36–0.59)	1.49* (1.03,2.15)
	Highest Tertile (≥0.60)	2.30‡ (1.56,3.38)
4	Claims-Based Inverse Number of Providersd
	Middle Tertile (0.16–0.25)	1.59* (1.03,2.46)
	Highest Tertile (≥0.26)	1.80* (1.12,2.88)
5	Claims-Based Modified, Modified Continuity Indexd
	Middle Tertile (0.53–0.75)	1.32 (0.86,2.03)
	Highest Tertile (≥0.76)	1.69* (1.13,2.52)
6	Claims-Based Ejlertsson's Index Kd
	Middle Tertile (0.46–0.71)	1.00 (0.64,1.56)
	Highest Tertile (≥0.72)	1.70* (1.12,2.59)
7	Claims-Based Bice-Boxerman CoCd
	Middle Tertile (0.13–0.31)	1.05 (0.68,1.64)
	Highest Tertile (≥0.32)	2.33‡ (1.56,3.49)
8	Claims-Based Modified Continuity Indexd
	Middle Tertile (0.38–0.63)	1.42 (0.91,2.22)
	Highest Tertile (≥0.64)	1.98† (1.23,3.21)
9	Claims-Based Sequential Continuityd
	Middle Tertile (0.10–0.33)	2.00‡ (1.36,2.96)
	Highest Tertile (≥0.34)	2.35‡ (1.59,3.49)

*p<.05; † p<.01; ‡ p<.001.

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

^bAdjusted for Medicare managed care entry during the follow-up period, all predisposing, enabling, and need characteristics, as well as health service use factors.

^cReference category is low continuity defined as less than the average score.

^dReference category is the lowest tertile of scores.