TABLE 6. Multiple Regression for preterm ≤32 6/7 weeks intubated day-of-life 1, duration of intubation (days).
| Estimate | Standard error | t | p | |
|---|---|---|---|---|
| Model 1 (n = 82) | ||||
| Group (1 vs. 2) | 0.13 | 0.25 | 0.54 | 0.59 |
| Gestational age (1 week) | −0.20 | 0.05 | −3.92 | 0.0002 |
| Sex (male vs. female) | −0.48 | 0.25 | −1.92 | 0.06 |
| FiO2 prior to extubation × 100 (1 unit) | 0.06 | 0.01 | 5.15 | <0.0001 |
| Model 2 (n = 82) | ||||
| Group (1 vs. 2) | 0.20 | 0.26 | 0.75 | 0.45 |
| Birth weight (1 kg) | −0.81 | 0.32 | −2.54 | 0.01 |
| Sex (male vs. female) | −0.53 | 0.26 | −2.02 | 0.05 |
| FiO2 prior to extubation × 100 (1 unit) | 0.07 | 0.01 | 5.32 | <0.0001 |
Note: Log transformed, adjusted for sex, fractional inspiratory oxygen (FiO2) prior to extubation, and gestational age (model 1) or birth weight (model 2).