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Table 2 Contact and Time Requirements for Recruitment and Survey Return (n = 41)

From: Recruiting medical groups for research: relationships, reputation, requirements, rewards, reciprocity, resolution, and respect

Action Recruitment Survey Return
Number of calls made:   
   Total (mean) 154 (3.8) 89 (2.2)
   0 - 19
   1 8 7
   2 13 1
   3–7 16 12
   >7 4 2
Number of phone discussions:   
   Total (mean) 84 (2.0) 49 (1.2)
   0 - 20
   1 24 9
   2–3 10 8
   4–6 7 4
Days from first call to last:   
   Mean 13.5 13.9
   0 - 19
   1–7 22 7
   8–14 4 1
   15–21 6 3
   22–28 3 0
   >28 4 11
Recruitment required approval from others 10 N/A
Number of days if approval required: range (mean) 13–97 (36) N/A