TABLE 4a.

Demographics/Outcomes for patients with cervical SCI, off MV at discharge vs. on MV at discharge

	Off ventilation at D/C (N=138)	On ventilation at D/C (N=59)	p
Age	44 (18–82)	44 (18–80)	0.9584
Male	107 (77.0%)	46 (78.0%)	0.2820
Blunt mechanism	127 (91.4%)	53 (89.8%)	0.3430
Mean injury severity score	27 +/− 14	36 +/−17	0.0002
Mean AIS-head	4 +/− 2	4 +/− 2	0.0356
Mean AIS-chest	1 +/− 2	2 +/− 2	0.5217
Median arrival Glasgow coma scale	14 (6–15)	13 (8–15)	0.9085
Complete injury	55 (39.6%)	44 (74.6%)	0.0000
Traumatic brain injury	24 (17.3%)	18 (30.5%)	0.0410
Other injury	86 (61.9%)	35 (59.3%)	0.9730
Operative stabilization	103 (74.1%)	46 (78.0%)	0.0220
Ventilator associated pneumonia	43 (31.0%)	48 (81.4%)	0.0000
Acute lung injury	7 (5.0%)	9 (15.3%)	0.0060
Acute respiratory distress syndrome	12 (8.6%)	7 (11.9%)	0.7770
ICU days	12 (6–19)	27 (17–37)	0.0001
Hospital days	19 (11–30)	29 (18–41)	0.0004
Ventilator-free days (to 28 days)	20 (11–25)	0 (0-0)	0.0001
Extubation attempted	85 (61.2%)	7 (11.9%)	0.0000
Tracheostomy	60 (43.2%)	55 (93.2%)	0.0000

^*Patient demographics, injury characteristics, ventilatory status at discharge or transfer, and outcomes for cervical SCI patients on and off MV at discharge. Significance assessed by Kruskal-Wallis for continuous and Fisher’s exact test for dichotomous outcomes among groups. Data are mean +/− SD, median (inter-quartile range), or n (%) as indicated. For not-normally distributed variables reported as median with inter-quartile ranges. Ventilator-free days are counted to 28 days.