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Table 1 Call time distribution

From: Health services changes: is a run-in period necessary before evaluation in randomised clinical trials?

 

Mean (SD), number of telephone calls

 

Run-in period N = 759

Main trial N = 1236

PCT

  
 

A

31 (12.2), 190

23 (9.3), 395

 

B

29 (11.1), 181

27 (9.8), 290

 

C

38 (12.7), 255

30 (15.5), 298

 

D

23 (7.3), 133

19 (7.5), 253

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Trials

ISSN: 1745-6215