Table 3: Prediction of change in AHI (hierarchical regression analysis).

VariableBSE B 𝛽 𝑅 2 Adjusted 𝑅 2 𝐹 𝑃

Step  1.036−.006.853.365
 Study*6.2336.7.189.365
Step  2.098.0161.198.321
 Study13.1028.691.397.146
 Pre-CPAP AHI−.185.150−.325.230
Step  3.434.3535.361.007
 Study2.2707.689.069.771
 Pre-CPAP AHI−.012.131−.021.929
 Baseline POMS-Total−.342.097−.639.002

*“Study” is a dummy variable indicating from which protocol the subject was drawn.