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Survival of participants by birthweight receiving nasal oxygen vs. bCPAP. Fraction of eligible study subjects who survived to discharge and received nasal oxygen or bCPAP, stratified by birth weight. Results are reported for subjects with very low birth weight (>= 1.0 kg to <1.5 kg), low birth weight (>= 1.5 kg to <2.5 kg) and birth weights greater than or equal to2.5 kg.
doi:10.1371/journal.pone.0086327.g004
