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Table 1 Power to detect the intervention effect on documented preferences, according to three sources of information (n = 86 dyads per group, two-sided α = 0.05)

From: Promoting advance planning for health care and research among older adults: A randomized controlled trial

Source

Odds ratio

(95% CI)

Event rate in

the Control group

Event rate in the Experimental group

Power

Bravo et al. [39]

4.0 (1.6 - 10.4)

0.12*

 

95%

Patel et al. [87]

3.7 (1.5 - 9.4)

0.12*

 

92%

Pearlman et al. [10]

 

0.23

0.48

93%

  1. * Derived from 13 RCTs included in our systematic review (mean = 0.12, sd = 0.182, range: 0 to 0.56) and applied to Patel et al. who did not report the mean event rate across control groups.
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BMC Medical Ethics

ISSN: 1472-6939

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