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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