Table 3

Univariate regression for the breached attendances outcome variable

Variable	Parameter	Year
Variable	Parameter	2012	2013	2014	2015	2016
Empty day beds	R²	0.02	0.01	0.01*	0.00*	0.00
	Reg coef (95% CIs)	−0.001 (−0.003 to 0.001)	−0.001 (−0.004 to 0.002)	0.001 (−0.002 to 0.005)	0.001 (−0.003 to 0.006)	0.002 (−0.004 to 0.008)
	P value	0.15	0.43	0.4	0.54	0.6
Empty night beds	R²	0.10*	0.09	0.07	0.05	0.06*
	Reg coef (95% CIs)	−0.012 (−0.019 to –0.006)	−0.015 (−0.022 to –0.007)	−0.017 (−0.027 to –0.006)	−0.017 (−0.031 to –0.004)	−0.025 (−0.042 to –0.008)
	P value	<0.01	<0.01	<0.01	0.01	<0.01
Delayed transfers	R²	0.04*	0.02	0.01*	0.01	0.04
	Reg coef (95% CIs)	0.006 (0.001 to 0.011)	0.005 (−0.001 to 0.011)	0.003 (−0.004 to 0.011)	0.003 (−0.005 to 0.011)	0.011 (0.002 to 0.020)
	P value	0.01	0.13	0.36	0.43	0.02
Day bed:night bed ratio	R²	0.03	0.02	0.01	0.04	0.05
	Reg coef (95% CIs)	−0.058 (−0.118 to 0.002)	−0.066 (−0.138 to 0.006)	−0.058 (−0.156 to 0.040)	−0.146 (−0.264 to –0.027)	−0.218 (−0.378 to –0.058)
	P value	0.06	0.07	0.25	0.02	0.01
ED conversion ratio	R²	0.07	0.05	0.05*	0.05	0.03
	Reg coef (95% CIs)	0.071 (0.027 to 0.115)	0.082 (0.025 to 0.140)	0.114 (0.033 to 0.195)	0.143 (0.039 to 0.248)	0.144 (0.000 to 0.288)
	P value	<0.01	0.01	0.01	0.01	0.05
Admission casemix ratio	R²	0.00	0.00	0.00	0.00*	0.00
	Reg coef (95% CIs)	0.002 (−0.007 to 0.010)	0.001 (−0.010 to 0.012)	−0.002 (−0.016 to 0.012)	0.007 (−0.012 to 0.025)	−0.001 (−0.027 to 0.024)
	P value	0.70	0.86	0.77	0.47	0.93
Emergency admission:bed ratio	R²	0.01	0.02	0.01*	0.04	0.01
	Reg coef (95% CIs)	0.002 (−0.001 to 0.006)	0.003 (−0.001 to 0.008)	0.003 (−0.002,0.009)	0.009 (0.001 to 0.017)	0.005 (−0.005 to 0.015)
	P value	0.21	0.14	0.25	0.03	0.33

All results were based on data from 131 or more trusts.
*Indicates non-normality, heteroskedasticity or influential outlier in regression.
ED, emergency department; Reg coef, regression coefficient, β.