Table 4.

Interactions between 30-day death, social deprivation and comorbidities for weekend admissions

	Risk of 30-day death after a weekend admission
	Index admissions only		Readmissions only
	OR (95% CI)	p Value	OR (95% CI)	p Value
No comorbidities (CCI=0)	1.17 (1.02 to 1.34)	0.023	1.05 (0.85 to 1.30)	0.638
Least social deprivation (IMDS top quartile)	1.24 (1.11 to 1.38)	<0.001	0.95 (0.72 to 1.25)	0.725
No comorbidities × least social deprivation	0.90 (0.72 to 1.13)	0.380	1.09 (0.65 to 1.85)	0.726

No comorbidities was defined as a CCI of zero; least social deprivation represents the top quartile of the IMDS range.

CCI, Charlson Comorbidity Index; IMDS, Index of Multiple Deprivation Score.