A self-report comorbidity questionnaire for haemodialysis patients

BMC Nephrology

Table 3 Logistic regression models for survival at 18 months

MODEL 1: Nagelkerke R² = 0.202	B	S.E.	Wald	p-value	Exp(B)
Age (Years)	.030	.013	5.540	.019	1.031
Sex (Male v Female)	.440	.344	1.635	.201	1.553
Ethnicity (Non-white v White)	-.222	.381	.340	.560	.801
CSCS	.392	.081	23.386	.000	1.480
Constant	−4.616	.962	23.026	.000	.010
MODEL 2: Nagelkerke R ² = 0.211
Age (Years)	-.015	.016	.894	.344	.985
Sex (Male v Female)	.211	.348	.367	.545	1.235
Ethnicity (Non-white v White)	-.213	.376	.322	.570	.808
CCI	.521	.105	24.445	.000	1.683
Constant	−3.641	.909	16.035	.000	.026
MODEL 3: Nagelkerke R ² = 0.250
Age (Years)	-.002	.016	.021	.886	.998
Sex (Male v Female)	.298	.355	.702	.402	1.347
Ethnicity (Non-white v White)	-.315	.387	.663	.416	.730
CCI	.365	.117	9.715	.002	1.440
CSCS	.262	.092	8.180	.004	1.300
Constant	−4.251	.972	19.125	.000	.014

Model 1 includes the Composite Self-report Comorbidity Score (CSCS). Model 2 includes the Charlson Comorbidity Index (CCI). Model 3 includes both parameters.

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