Percentages of Infants in Each Group Who Had Bouts of Unsoothable Crying and Whose Total Distress (Fussing + Crying + Unsoothable Crying) Averaged >3 Hours at Each Age

VariableLondon Community, %Copenhagen Community, %Proximal Care, %χ2P
Unsoothable bouts
    At 10 d373625NS
    At 5 wk384733NS
    At 12 wk202924NS
Distress ≥3 h
    At 10 d1712<.001
    At 5 wk1459NS
    At 12 wk424NS
  • NS indicates not significant.