TABLE 1

Characteristics and Antecedents Associated With Pulmonary Deterioration

CharacteristicLow Fio2 (N = 249), Column %Pulmonary Deterioration (N = 484), Column %EPPD (N = 576), Column %Row NP
Gestational age, wk
    23131075≤.0005
    2441723228
    25112125272
    26252625327
    27593417407
Birth weight, g
    ≤750143754527≤.0005
    751–1000464537545
    1001–125037169216
    >125032121
Birth weight z score
    Less than −245986≤.0005
    Less than −151517184
    −1 to 0314037481
    ≥0604037558
Male gender505355696.49
Multifetal pregnancy323330412.60
Any antenatal steroids9291881177.15
Initiator of delivery
    PTL434444570.45
    pPROM272120283
    Preeclampsia101415180
    Abruption101111139
    Cervical insufficiency67681
    Fetal indication43556
Cesarean delivery706565866.39
Any chorioamnionitis555453651.89
Any funisitis403332396.09
  • PTL indicates preterm labor; pPROM, preterm prolonged rupture of membranes.