Table 7.
Reliability statistics of the Persian BISQ
| Items | kappa | ICC | (95% CI) |
|---|---|---|---|
| Sleeping arrangement | 0.65 | - | - |
| Sleep position | 0.84 | - | - |
| Sleep situation | 0.66 | - | - |
| Nocturnal sleep duration (hour) | - | 0.92 | (0.84,0.96) |
| Daytime sleep duration (hour) | - | 0.94 | (0.87,0.97) |
| Number of waking at night | - | 0.96 | (0.92,0.98) |
| Night waking duration (hour) | - | 0.97 | (0.94,0.99) |
| Nocturnal sleep latency (hour) | - | 0.98 | (0.96,0.99) |
| Sleep onset time (hour: minute) | - | 0.99 | (0.99,1.00) |
Abbreviations BISQ: Brief Infant Sleep Questionnaire; ICC: Intra class coefficient; CI: Confidence interval
All ICCs were significant at the P < 0.001 level