Table 3

Comparison of areas under the receiver operator characteristic curves

All infantsInfants <30 weeks gestational age
CRS, compliance of the respiratory system; IP, inspiratory pressure; MIP, maximum inspiratory pressure; PIP, peak inspiratory pressure; Fio2, inspired oxygen concentration.
Gestational age0.930.93
Birth weight0.860.81
Postnatal age0.890.98
Max PIP0.710.86
Max Fio20.620.66
CRS/kg0.540.51
Inspiratory pressures
    Mean IP0.780.86
    Max IP0.720.67
    Mean MIP0.900.95
    Max MIP0.820.83
Inspiratory pressures corrected for birth weight
    Mean IP/kg0.590.69
    Max IP/kg0.610.52
    Max MIP/kg0.530.62
    Mean MIP/kg0.520.81