Table 2.

Clustering of cases.

Usage combinations	Clustersa
	Low usage	Moderate usage	High usage
Low adoption—low utilization	Facilities B and E	N/Ab	N/A
Moderate adoption—low utilization	Facility C	N/A	N/A
Moderate adoption—moderate utilization	N/A	Facility F	N/A
High adoption—low utilization	N/A	Facility A	N/A
High adoption—moderate utilization	N/A	Facility D	N/A
High adoption—high utilization	N/A	N/A	None

^aAs utilization covered a longer period than adoption and total duration of use varied between facilities, when defining clusters, cases were stepped down to account for this.

^bN/A: not applicable.