Table 2.

Demographics and injury characteristics of included EMSCI cohort stratified by sex

	Female (N=1059)	Male (N=3542)	Overall (N=4601)
Sex
Female	1059 (100%)	0 (0%)	1059 (23.0%)
Male	0 (0%)	3542 (100%)	3542 (77.0%)
Age (years)
Mean (SD)	51.1 (20.2)	46.0 (18.4)	47.2 (19.0)
Median [Min, Max]	52.0 [9.00, 94.0]	46.0 [9.00, 92.0]	47.0 [9.00, 94.0]
Cause
Disc herniation	3 (0.3%)	10 (0.3%)	13 (0.3%)
Hemorrhagic	12 (1.1%)	3 (0.1%)	15 (0.3%)
Ischemic	129 (12.2%)	202 (5.7%)	331 (7.2%)
Traumatic	915 (86.4%)	3327 (93.9%)	4242 (92.2%)
AIS Score
A	360 (34.0%)	1459 (41.2%)	1819 (39.5%)
B	136 (12.8%)	418 (11.8%)	554 (12.0%)
C	227 (21.4%)	644 (18.2%)	871 (18.9%)
D	336 (31.7%)	1021 (28.8%)	1357 (29.5%)
Neurological level of injury
Cervical	539 (50.9%)	1899 (53.6%)	2438 (53.0%)
Thoracic	387 (36.5%)	1256 (35.5%)	1643 (35.7%)
Lumbar	133 (12.6%)	387 (10.9%)	520 (11.3%)

American Spinal Injury Association Impairment Scale (AIS): AIS-A no sensory or motor function is preserved in the sacral segments S4-5. AIS-B sensory but no motor function is preserved below the neurological level and includes the sacral segments S4-5 (LT or PP at S4-5 or DAP), and no motor function is preserved more than three levels below the motor level on either side of the body. AIS-C motor function is preserved at the most caudal sacral segments for voluntary anal contraction OR the patient meets the criteria for sensory incomplete status, and has some sparing of motor function more than three levels below the ipsilateral motor level on either side of the body. Less than half of key muscle functions below the single NLI have a muscle grade ≥ 3. AIS-D motor incomplete status as defined above, with at least half (half or more) of key muscle functions below the single NLI having a muscle grade ≥ 3. AIS-E if sensation and motor function as tested with the ISNCSCI are graded as normal in all segments, and the patient had prior deficits, then the AIS grade is E. Someone without an initial SCI does not receive an AIS grade