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Table 3 Power calculations for aim 1b

From: Protocol for evaluating the nationwide implementation of the VA Stratification Tool for Opioid Risk Management (STORM)

Baseline rate (%)

Sample size

70

80

90

∆* (%)

OR

∆* (%)

OR

∆* (%)

OR

50

+ 16.1

1.95

+ 15.2

1.87

+ 14.4

1.81

60

+ 14.8

1.98

+ 14.0

1.90

+ 13.3

1.83

70

+ 12.9

2.08

+ 12.2

1.98

+ 11.6

1.91

80

+ 10.2

2.31

+ 9.7

2.19

+ 9.3

2.09

90

+ 6.5

3.05

+ 6.2

2.84

+ 6.0

2.68

  1. *Detectable difference from baseline case completion rate in the consequences (vs. no consequences) arm at a given sample size and with 80% power