| Test Value = 0 | ||||||
| t | df | Sig (2-tailed) | Mean Difference | 95% Confidence Interval of the difference | ||
| Lower | Upper | |||||
| Gestational age | 5.963 | 12 | 0 | 2.077 | 1.32 | 2.84 |
| Maternal age | 7.047 | 12 | 0 | 2.692 | 1.86 | 3.52 |
| Focus of infection | 4.43 | 12 | 0 | 1.692 | 0.86 | 2.52 |