Table S2.

Socioeconomic status (as per IMD 2010)-stratified discrimination of the comorbidity models

Quintile of socioeconomic status	Patients (n)	Patients (%)	Charlson Comorbidity Index C statistic	95% CI	CirCom index C statistic	95% CI
Missing socioeconomic status	19	0.00	0.71	0.48–0.94	0.62	0.36–0.88
1=least deprived	856	0.17	0.63	0.60–0.66	0.64*	0.62–0.67
2	987	0.19	0.65	0.62–0.67	0.64	0.62–0.67
3	986	0.19	0.61	0.59–0.64	0.62	0.60–0.65
4	1059	0.21	0.60	0.58–0.63	0.62	0.59–0.64
5=most deprived	1211	0.24	0.61	0.59–0.63	0.63**	0.61–0.65

Notes:

^*p=0.03 between discrimination for the Charlson Comorbidity Index and the CirCom score.

^**p=0.007 between discrimination for the Charlson Comorbidity Index and the CirCom score. IMD, The English Indices of Multiple Deprivation 2010.²

Abbreviation: CI, confidence interval.