Mean Daily Total Crying* and Sleeping (Hours/Day)
| Age of Infant (Weeks) | Control (n = 17) | Intervention (n = 18) | P | ||
|---|---|---|---|---|---|
| n (with Data) | Mean (SD) | n (with Data) | Mean (SD) | ||
| Crying | |||||
| 4 | 16 | 2.1 (1.2) | 17 | 2.4 (0.9) | .3† |
| 6 | 16 | 1.9 (1.1) | 17 | 2.2 (1.2) | .4† |
| 8 | 17 | 1.5 (1.2) | 17 | 2.2 (1.2) | .04† |
| 12 | 14 | 1.2 (0.8) | 12 | 1.8 (2.0) | .8† |
| Sleeping | |||||
| 4 | 16 | 13.9 (2.4) | 17 | 14.9 (1.6) | .2‡ |
| 6 | 16 | 14.5 (1.9) | 17 | 14.4 (1.5) | .8‡ |
| 8 | 17 | 14.1 (1.7) | 17 | 13.9 (1.6) | .7‡ |
| 12 | 14 | 14.1 (1.5) | 12 | 14.0 (2.2) | 1.0‡ |
* Includes fussing, crying, and unsoothable crying.
† Wilcoxon 2-sample test.
‡ Student t test.