Feasibility of a Practical Clinical Trial for Asthma Conducted in Primary Care

Article Figures & Data

Table 1.

Asthma Patient Recruiting Outcomes for 10 Sites

Site descriptions	No. Subjects Randomized	No. Months to Recruit Subjects	No. Subjects Randomized per 6-Month Interval
Single physician practices^*
1	8	18	2.7
2	4	9	2.7
3	5	11	2.7
4	3	11	1.6
5	2	6	2.0
6	4	7	3.4
7	4	7	3.4
8	5	6	5.0
Average, sites 1 to 8			2.9
ER^†	3	2	7.2
MCO^‡	7	7	6.0

* Eight single-physician primary care practices, of which numbers 2, 3, 5, and 8 were 50% full-time academic practices. Sites 3 to 6 were assisted by research associates.
† A participating physician recruited from an inner-city emergency room.
‡ Research assistants recruited from a managed care organization (MCO) asthma research center.

Table 2.

Patient Exit Questionnaire Responses (N = 26)

	Agree/Strongly Agree	Neutral	Disagree/Strongly Disagree
Study instructions were easy to understand.	25	1	0
It was convenient for me to participate.	22	3	1
I liked using the telephone response system.	20	4	2
I would prefer another way of reporting symptoms.	3	6	17
My understanding of my asthma has improved as a result of participating in this study.	11	11	4