Table 2.

Descriptive statistics

Variable	Description (unit of measurement)	Obs.	Mean	Median	Std. Dev.	Min	Max
${\mathit{epidays}}_{\mathit{c}}$	Days in cluster (days)	988,648	109.3	86.0	91.3	1.0	365.0
${\mathit{warddays}}_{\mathit{c}}$	Days admitted to hospital (days)	988,648	2.5	0.0	13.5	0.0	364.0
${\mathit{rc}}_{\mathit{adm},\mathit{c}}^{\mathit{NA}}$	National average cost admitted days (£)	988,648	361.9	360.0	18.4	324.2	396.4
${\mathit{rc}}_{\mathit{nonadm},\mathit{c}}^{\mathit{NA}}$	National average cost non-admitted days (£)	988,648	9.2	8.1	5.9	3.4	37.3
${\mathit{rc}}_{\mathit{adm},\mathit{c}}^{\mathit{p}}$	Provider level cost admitted days (£)	967,848	365.6	358.7	90.3	6.3	1,456.5
${\mathit{rc}}_{\mathit{nonadm},\mathit{c}}^{\mathit{p}}$	Provider level cost non-admitted days (£)	985,139	10.1	8.6	10.6	0.2	427.5
${\mathit{hpcondays}}_{\mathit{c}}$	Days with contact with a health care professional (days)	988,648	6.6	3.0	10.3	0.0	356.0

Not all providers report Reference Costs for all the Clusters, therefore the cost variables at provider level have fewer observations than the national ones. All costs are for the financial year 2014/15