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Table 2 Sample size calculations for detection of reductions in error rate

From: Protocol for evaluation of the cost-effectiveness of ePrescribing systems and candidate prototype for other related health information technologies

Risk ratio

Power (%)

Sample size (total)

0.6

80

3,210

0.7

80

5,940*

0.8

80

13,888

0.6

90

4,230

0.7

90

7,862

0.8

90

18,456

  1. *Similar to proposed sample in this study.
  2. Sample size calculations for detection of reductions in error rate; baseline error rate 5% and other assumptions, as in Table 1.
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BMC Health Services Research

ISSN: 1472-6963

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