Table 5.
Parents rating of the length and difficulty of the questionnaires, and percentage of parents with criticisms
| PSYBOBA | PSC | SDQ | Significance+ | |
|---|---|---|---|---|
| n = 796 | n = 815 | n = 814 | ||
| Response rate | 84% | 84% | 87% | ** |
| Mean n unanswered items† | 0.06 | 0.18 | 0.05 | *** |
| parents rating: not too long (vs. (too) long) | 88% | 80% | 81% | **** |
| parents rating: (very) easy (vs. (very) difficult, not difficult/not easy) | 69% | 59% | 66% | * |
| Parents having critical remarks | 9% | 20% | 10% | *** |
+: p < 0.05; **: p < 0.01; *** p < 0.001
†: Corrected for total number of items in each questionnaire; standardized for 25 items