Number of Time Points at Which Sleep Problems and Cry-Fuss/Sleep Problems Combined Were Reported

No. of Time PointsProportion of Parents Reporting Sleep Problem, %Proportion of Parents Reporting Cry-Fuss/ Sleep Problem Combined, %
No problem at any time point66.051.9
Problem at 1 time point only19.425.3
Problem at any 2 time points8.313.3
Problem at any 3 time points4.86.4
Problem at any 4 time points1.51.9
Problem at any 5 time points0.8
Problem at all 6 time points0.5
  • n = 397 for sleep problems only and n = 376 for combined cry-fuss/sleep problems; all cases for which data were missing at any of the time points measured were excluded from these figures.