Table 2.

Infant Sleep Patterns and Maternal Report of Sleep Problem

Sleep CharacteristicSleep ProblemPValueχ2/zdf
No (n = 398)Yes (n = 339)
Adult nurses child to sleep (%)   Yes3255<.00138.66*1
Sleep site (%)
Own cot, own room7364.00614.28*3
Own cot, parent's room1414
Parents' bed (cosleeping)715
Evening bedtime (pm)
Mean (SD)7.5 (1.2)8.1 (1.1).04−2.05
Range2–12 6–12
Time taken to fall asleep (min)
Median1010<.001−3.67
Range0–1200–90
Number of disturbed nights per wk
Median27<.001−14.01
Range0–7 0–7
Number of wakings per night
Median12<.001−13.92
Range0–8 0–8
Length of each waking (min)
Median715<.001−6.07
Range1–45 1–120
Who responds to the waking
child overnight (%)
Mother7985.0229.61*3
Father97
Mother and father108
No one20
Morning rising (am)
Mean7.307.10.0013.28
Range5.30–122–12
Number of naps per d
Mean22.544.08
Range1–71–5
Length of usual nap (min)
Mean (SD)78 (1.6)72 (1.6).0092.63
Range3–1801–180
  • * χ2 analysis.

  • Student's t test.

  • Mann-Whitney U test.