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. Author manuscript; available in PMC: 2017 Oct 26.
Published in final edited form as: J Pediatr. 2017 Jun 7;189:113–119.e2. doi: 10.1016/j.jpeds.2017.04.050

Table II.

Peri-extubation characteristics of successful vs failed extubation groups

Characteristics
Mean (SD), median (25th, 75th percentile), or n/N (%)		 Successful extubation n = 538 Failed extubation n = 388 P value
PMA at extubation (wk) 27.5 (1.79) 27.0 (2.12) <.01
Age at extubation (d) 2 (2, 6) 3 (2, 9) <.01
Pre-extubation characteristics:
 FiO2 0.26 (0.11) 0.38 (0.22) <.01
 pH 7.37 (.07) 7.29 (0.13) <.01
 pCO2 (mm Hg) 40.1 (9.19) 50.1 (16.6) <.01
First postextubation level of support (nasal IMV) 74/536 (13.8%) 78/332 (23.5%) <.01

IMV, intermittent mechanical ventilation.