From: Who says “no” to participating in stroke clinical trials and why: an observational study from the Vancouver Stroke Program
Odds ratio (95% CI), p-value
Model 1 (gender only)
Model 2 (+age)
Model 3 (+age, intervention)
0.53 (0.31–0.90), p = 0.02
0.46 (0.26–0.82), p = 0.008
0.46 (0.26–0.82), p = 0.009