Table 1 The preset non-zero predictors and their assumed effect values of the different simulation scenarios
Simulation scenarios | Group, non-zero predictors and effect size | |||||||
|---|---|---|---|---|---|---|---|---|
1 non-overlap group | ||||||||
Group | group1 | group5 | group20 | |||||
predictors | {x5 | x 20 | x40} | {x210 | x 220 | x240} | {x975 | x995} |
2 overlap group | ||||||||
Group | group1 | group5 | group20 | |||||
predictors | {x5 | x 20 | x40} | {x210 | x 220 | x240} | {x975 | x995} |
3 varying group size (4/20/50) | ||||||||
Group | group1 | group11 | ||||||
predictors | {x1 | x 2 | x 3 | x4} | {x501 | x 502 | x 503 | x504} |
4 varying number of non-null groups (8/3/1) | ||||||||
Group | group1 | group2 | group7 | group8 | group11 | group12 | group19 | group20 |
predictors | {x5} | {x55} | {x305} | {x355} | {x505} | {x555} | {x905} | {x955} |
Group | group1 | group8 | group20 | |||||
predictors | {x5 | x 15 | x25} | {x355 | x 365 | x375} | {x905 | x915} |
Group | group1 | |||||||
predictors | {x5 | x 10 | x 15 | x 20 | x 25 | x 30 | x 35 | x40} |
5 varying correlation within group (r = 0.0/0.5/0.7) | ||||||||
Group | group1 | group5 | group20 | |||||
predictors | {x5 | x 20 | x40} | {x210 | x 220 | x240} | {x975 | x995} |
Effect size for above simulation scenarios | ||||||||
|  | 0.8 | −0.7 | 1.0 | −0.9 | −0.8 | 0.9 | −1.0 | 0.7 |
6 varying effect size | ||||||||
Group | group1 | group5 | group20 | |||||
predictors | {x5 | x 20 | x40} | {x210 | x 220 | x240} | {x975 | x995} |
Effect size for scenario 6 | ||||||||
|  | (−2, 2) | −0.7 | 1.0 | −0.9 | −0.8 | 0.9 | −1.0 | 0.7 |