TABLE 2

Cry-Fuss and Sleep Diary Characteristics for Problem and Nonproblem Criers (2 and 4 mo) and Sleepers (12 mo)

Variable2 mo (n = 446)4 mo (n = 430)12 mo (n = 426)
Crying ProblemNo Crying ProblemPaCrying ProblemNo Crying ProblemPaSleep ProblemNo Sleep ProblemPa
Crying-fussing
    No. of bouts11.6 (6.1)9.7 (4.4)<.00110.7 (5.0)7.7 (4.5)<.00017.9 (3.8)5.6 (3.9)<.0001
    Time per bout, min14.6 (8.8)11.6 (6.6)<.000112.9 (11.1)10.0 (4.9)<.00110.8 (5.4)10.1 (6.9).43
    Time per day, h2.5 (1.30)1.8 (1.0)<.00012.0 (1.3)1.2 (0.8)<.00011.3 (0.6)0.9 (0.7)<.0001
Sleeping
    No. of bouts9.7 (3.8)8.6 (8.6)<.057.9 (2.1)6.8 (2.1)<.015.5 (2.0)4.0 (1.4)<.0001
    Time per bout, min97.6 (39.8)108.5 (37.0)<.05115.2 (42.7)134.5 (44.2)<.01156.6 (60.6)227.7 (84.5)<.0001
    Time per day, h13.7 (2.1)14.2 (1.8)<.0513.8 (1.5)14.1 (2.0).2612.7 (1.91)13.6 (1.8)<.0001
  • All results are reported as mean (SD).

  • a Independent-samples t test.