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Frequency of nightmares, and sleep-onset and maintenance problems across time-points
| Sleep problem | No time-points | 1 time-point | 2 time-points | 3+ time-points |
|---|---|---|---|---|
| Nightmaresa | 1403 (25.3 %) | 1169 (21.1 %) | 943 (17 %) | 2029 (36.6 %) |
| Sleep onseta | 1159 (21.8 %) | 1413 (26.6 %) | 1221 (23 %) | 1525 (28.7 %) |
| Sleep maintenancea | 4135 (78.3 %) | 737 (14 %) | 297 (5.6 %) | 109 (2.1 %) |
aDefined by mother as “regular” problem
