Table 1.

Number and percentage of references and units coded on the initial implementation components.

Implementation components	K a	%	k b	%
Selection	114	69.5	164	54.3
Training	28	17.1	44	14.6
Supervision	36	22.0	61	20.2
Performance	9	5.5	12	4.0
Decision support	2	1.2	4	1.3
Administrative support	7	4.3	8	2.6
System intervention	8	4.9	9	3.0
Leadership	0	0.0	0	0.0

^aUnique references coded onto the various implementation components.

^bAnalysis units extracted from the references.