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Table 2 Power to detect differences in means of b p and b c 0.2 to 0.5 standard deviation units (α = 0.05)

From: Values and preferences in oral anticoagulation in patients with atrial fibrillation, physicians' and patients' perspectives: protocol for a two-phase study

Sample b p - b c difference in SD units
Clinicians Patients 0.2 0.3 0.4 0.5
96 96 .28 .54 .79 .93
96 144 .33 .62 .86 .97
96 192 .36 .67 .89 .98
96 288 .39 ,71 .92 .99