Cluster randomized trials utilizing primary care electronic health records: methodological issues in design, conduct, and analysis (eCRT Study)

Table 2 Recruitment of general practices into the two trials

	Weeks from first invitation letter	Event	Cumulative number of general practices allocated
Antibiotic trial	0	First invitation, England	0
	5	34 practices allocated	34
	7	Reminder, England; first invitation Scotland	34
	13	37 practices allocated	71
	16	Reminder, Scotland	71
	19	19 practices allocated	90
	23	11 practices allocated	101
	27	3 practices allocated	104
Stroke trial	0	First invitation	0
	5	71 practices allocated	71
	14	28 practices allocated	99
	21	7 practices allocated	106

ISSN: 1745-6215