Table 2.

 Regression coefficients (95% confidence intervals) for relation* between avoidable death proportion and two hospital-wide standardised mortality ratio (SMR) metrics, the hospital standardised mortality ratio (HSMR) and the summary hospital level mortality indicator (SHMI)

Sample of trusts	HSMR		SHMI
	Regression coefficient (95% CI)	P value	Regression coefficient (95%CI)	P value
Overall (n=34)	0.3 (-0.2 to 0.7)	0.23	0.3 (-0.3 to 1.0)	0.29
2009 (n=10)	0.1 (-0.1 to 1.3)	0.82	-0.02 (-1.0 to 0.6)	0.56
2012/13 (n=24)	0.3 (-0.2 to 0.7)	0.26	0.5 (-0.4 to 1.3)	0.24

*Regression coefficient can be interpreted as percentage point increase in avoidable death proportion for 10 point increase in SMR.