Table 2.

Hazard ratios for mortality by standardized metrics after 10-year follow-up, 2006–2016

	N=9,923
Deaths	N=4465
Model	HR (95% CI)	P Value	AIC	C-statistic (SE)
Multimorbidity-Weighted Index-ICD coded conditions, continuous	1.60 (1.56–1.64)	<0.001	78651.71	0.642 (0.004)
Multimorbidity-Weighted Index-ICD coded conditions, quartiles	3.28 (3.01–3.57)	<0.001	78763.31	0.632 (0.004)
Q4	1.80 (1.64–1.97)	<0.001
Q3	1.10 (1.00–1.22)	0.05
Q2	1.0
Q1 (reference)	P trend <0.001
Simple Disease Count, continuous	1.44 (1.40–1.48)	<0.001	79152.34	0.602 (0.004)
Simple Disease Count, quartiles	2.22 (2.04–2.42)	<0.001	79255.97	0.592 (0.004)
Q4	1.33 (1.21–1.46)	<0.001
Q3	1.02 (0.93–1.12)	0.30
Q2	1.0
Q1 (reference)	P trend <0.001
Charlson Index, continuous	1.54 (1.50–1.57)	<0.001	78743.11	0.643 (0.004)
Charlson Index, quartiles			78789.17	0.634 (0.004)
Q4	3.23 (2.99–3.49)	<0.001
Q3	2.13 (1.94–2.34)	<0.001
Q2	1.47 (1.34–1.61)	<0.001
Q1 (reference)	1.0
	P trend <0.001
Elixhauser Score, continuous	1.62 (1.58–1.66)	<0.001	78597.46	0.642 (0.004)
Elixhauser Score, quartiles			78849.09	0.624 (0.004)
Q4	2.90 (2.61–3.23)	<0.001
Q3	1.48 (1.30–1.67)	<0.001
Q2	1.11 (0.99–1.24)	0.09
Q1 (reference)	1.0
	P trend <0.001
HRQOL-Comorbidity Index, continuous	1.48 (1.45, 1.53)	<0.001	79035.36	0.614 (0.004)
HRQOL-Comorbidity Index, quartiles
Q4	2.49 (2.28–2.72)	<0.001	79169.68	0.602 (0.004)
Q3	1.49 (1.35–1.64)	<0.001
Q2	1.11 (1.00–1.22)	0.04
Q1 (reference)	1.0

Abbreviations: AIC, Akaike Information Criterion; C, concordance; HR, hazard ratio; HRQOL, health-related quality of life; Q, quartile; ICD, International Classification of Diseases; SE, standard error