Table 3.

Regression analysis^* for the trends of survival and complete independence scores in each domain

Outcome	OR (95%CI)	P value	Sensitivity analysis†
			OR (95%CI)	P value
Severe adult traumatic brain injury
Survival	1.10 (1.08 to 1.11)	<0.001
Complete independence score‡
Feeding	1.05 (1.03 to 1.06)	<0.001	1.00 (0.99 to 1.02)	0.121
Locomotion	1.01 (1.00 to 1.03)	0.010	0.99 (0.97 to 1.00)	0.247
Expression	1.06 (1.05 to 1.08)	<0.001	1.01 (1.00 to 1.02)	0.010
Transfer Mobility	1.01 (1.00 to 1.03)	0.018	0.99 (0.97 to 1.00)	0.142
Social Interaction	1.07 (1.05 to 1.08)	<0.001	1.01 (1.00 to 1.03)	0.002
Isolated severe adult traumatic brain injury§
Survival	1.11 (1.09 to 1.13)	<0.001
Complete independence score‡
Feeding	1.06 (1.03 to 1.08)	<0.001	1.00 (0.98 to 1.02)	0.598
Locomotion	1.01 (0.99 to 1.03)	0.128	0.98 (0.96 to 1.00)	0.073
Expression	1.06 (1.04 to 1.09)	<0.001	1.00 (0.99 to 1.02)	0.351
Transfer Mobility	1.01 (0.99 to 1.03)	0.169	0.98 (0.96 to 1.00)	0.053
Social Interaction	1.07 (1.05 to 1.09)	<0.001	1.01 (0.99 to 1.02)	0.108

OR, Odds ratio; CI, Confidence intervals.

^*Logistic regressions were performed separately for discharge status and separately for complete independence scores of each domain. Each model was adjusted for age, sex, race, co-morbidities, injury mechanisms, presence of extra-cranial injuries, NISS, length of hospital stay, trauma center, and hospital trauma level.

^†Sensitivity analyses were performed assigning the missing data in functional status scores to the worst outcome (functional status score equal to 1).

^‡Complete Independence score is the best functional outcome or a functional independence measure score equal to 4 in each domain.

^§Isolated severe adult traumatic brain injury patients were defined as SATBI patients without other injuries or with extra-cranial injuries with maximum AIS of 1.