From: Comparison of methods for imputing limited-range variables: a simulation study
 | GHQ raw scale | GHQ transformed | ||||||
---|---|---|---|---|---|---|---|---|
 | % imputed below lower bound | % imputed above upper bound | % imputed below lower bound | % imputed above upper bound | ||||
Scoring method | MCAR | MAR | MCAR | MAR | MCAR | MAR | MCAR | MAR |
Likert | 2.0 | 2.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.2 | 0.2 |
C-GHQ | 12.2 | 11.6 | 0.1 | 0.1 | 7.9 | 7.4 | 1.8 | 0.2 |
Standard | 23.0 | 24.0 | 0.0 | 0.0 | 14.3 | 14.9 | 6.5 | 7.5 |