Pre-imputation and post-imputation means for GHQ (unweighted data)
| Pre-imputation GHQ mean | Post-imputation GHQ mean | |||
|---|---|---|---|---|
| Missing waves* | Mean | Frequency | Mean | Frequency |
| *Complete waves will invariably include item non-response. This explains the discrepancy in the wave by case frequency for post-imputation mean where there are no waves missing. | ||||
| None missing | 1.92 | 37509 | 1.93 | 38439 |
| One or more missing | 1.89 | 10926 | 2.17 | 23005 |
| Overall mean and frequency | 1.91 | 48435 | 2.02 | 61444 |