TABLE 1

Patient Characteristics

CharacteristicMeasure
No. of subjects197
Gender, male/female, n110/87a
Age (n = 196 of 197), mean (SD), median, y9.6 (±6.8), 8.9
No. (%) with transtracheostomy ventilator support97 (49)
No. (%) with noninvasive CPAP or BiPAP support98 (50)
No. (%) with negative pressure device2 (1)
Age of transtracheal subgroup (N = 96 of 97), mean (SD), median, y8.8 (±7.1), 6.0b
Age of noninvasive subgroup (N = 98), mean (SD), median, y10.3 (±6.6), 10.4b
Age at onset of mechanical ventilation >6 h/d (N = 89 of 197), mean (SD), median, y6.7 (±6.1), 5.8
  • a χ12 = 2.685; P > .10.

  • b Student's t test = −1.523; P = .065.