Qualitative evaluation of the Canadian Medical Association's counselling guidelines for HIV serologic testing, Table 1

Table 1: Sampling approach used to recruit primary care physicians for focus groups to evaluate CMA's HIV counselling guidelines[30] in preparation for a revised edition
City	No. selected	No. called	No. who agreed to participate	No. in final sample
Vancouver	200*/10+	210	11	7
Winnipeg	200*/26++	226	10	10
Toronto	200*/144+	344	8	6
Montreal English	125*	96	10	10
French	125*	59	10	9
Quebec City	125*	59	10	9
St. John's	200*/27+	227	9	6
Randomly selected from the CMA database. +Nonrandomly selected from the Canadian Medical Directory*.[31] ++Snowball sampling (see text for explanation).