Table 4 Impact of selection bias effect η=0.09 and linear time trend effect θ=0.26 with σ=0.73 on probability of type I error for Wei’s urn design
From: ERDO - a framework to select an appropriate randomization procedure for clinical trials
Randomization | Type I Error | P RP (ω≤0.05) |
|---|---|---|
Procedure | Probability | Â |
[R P] | [mean] | Â |
UD(0,1) | 0.051 | 0.44 |
UD(0,2) | 0.051 | 0.44 |
UD(0,3) | 0.051 | 0.44 |
UD(1,1) | 0.051 | 0.47 |
UD(1,2) | 0.051 | 0.46 |
UD(1,3) | 0.051 | 0.45 |
UD(2,1) | 0.051 | 0.48 |
UD(2,2) | 0.051 | 0.47 |
UD(2,3) | 0.051 | 0.46 |