Table 3.
Means, Standard Deviations, and the Results of Independent Samples t-Test Analysis on Neonatal and Demographic Characteristics of Participating Liberal and Restrictive Groups.
| Liberal (n = 33) | Restrictive (n = 23) | t | d.f. | p-value | Effect Size | |||
|---|---|---|---|---|---|---|---|---|
| Mean | SD | Mean | SD | |||||
| BW | 936.52 | 210.13 | 956.13 | 183.5 | 0.362 | 54 | .719 | .049 |
| GA | 27.88 | 2.28 | 27.67 | 1.65 | −0.371 | 54 | .712 | .050 |
| IVH Grade | 0.82 | 1.18 | 0.57 | 1.08 | −0.815 | 54 | .419 | .110 |
| HCT Mean | 44.47 | 4.10 | 36.65 | 2.41 | −8.203 | 54 | <.001 | .745 |
| Vent | 24.33 | 26.96 | 19.43 | 18.24 | −0.758 | 54 | .452 | .103 |
| Apnea | 24.00 | 24.16 | 39.04 | 38.92 | 1.785 | 54 | .080 | .236 |
| SNAP1 | 15.06 | 7.57 | 13.30 | 9.33 | −0.771 | 53 | .444 | .105 |
| SNAP2 | 10.34 | 6.69 | 10.00 | 6.64 | −0.188 | 53 | .851 | .026 |
| Age | 11.94 | 1.70 | 12.53 | 1.55 | 1.323 | 54 | .191 | .177 |
| SES | 2.76 | 0.64 | 2.74 | 0.58 | −0.110 | 54 | .913 | .015 |
| Mom Ed | 13.94 | 2.50 | 13.71 | 2.95 | −0.301 | 52 | .765 | .042 |
| Dad Ed | 12.79 | 3.06 | 13.55 | 2.78 | 0.886 | 46 | .380 | .130 |
Note. Birth weight (BW), Gestational Age (GA), Intraventricular Hemorrhage (IVH), Vent (Days on Ventilator), Apnea (Number of Apnea episodes requiring stimulation), Score for Neonatal Acute Physiology Day of Life 0 (SNAP1), Score for Neonatal Acute Physiology Week 1 Average (SNAP2), Socioeconomic Status (SES). Mother and Father Education are reported in years or school. Effect sizes (r) were calculated by r = √(t2/(t2+df)).