Table 4 Multinomial Logistic Regression for TBI and Predisposing, Need and Enabling Characteristics

Predisposing Factors

Sex

Male

1.00

1.00

Female

1.02 (0.87-1.20)

1.02 (0.92-1.14)

Age

< 18

0.09 (0.05-0.15)

0.22 (0.17-0.29)

18-24

1.01 (0.73-1.38)

0.65 (0.51-0.85)

25-34

1.02 (0.73-1.41)

0.94 (0.73-1.21)

35-44

1.00

1.00

45-54

1.32 (0.98-1.78)

1.35 (1.07-1.70)

55-64

1.21 (0.89-1.65)

1.76 (1.41-2.21)

65-74

1.22 (0.89-1.67)

2.73 (2.19-3.40)

75+

2.01 (1.52-2.65)

7.63 (6.26-9.30)

Need Factors

Charlson Comorbidity Index

0-1

1.00

1.00

2-3

1.32 (1.02-1.71)

1.93 (1.62-2.31)

≥ 4

0.81 (0.44-1.49)

3.65 (2.61-5.10)

Length of Stay (Percentile)

< 25^th

1.00

1.00

25-50^th

6.63 (2.38-18.45)

0.42 (0.37-0.49)

50-75^th

29.72 (11.00-80.33)

0.44 (0.38-0.51)

75-90^th

98.96 (36.62-267.44)

0.71 (0.60-0.85)

90^th+

168.00 (61.59-458.25)

0.96 (0.77-1.20)

Special Care Days

None

1.00

1.00

1-2

1.77 (1.39-2.25)

2.18 (1.90-2.51)

3-5

2.19 (1.72-2.80)

2.88 (2.40-3.45)

6-11

3.41 (2.63-4.42)

5.42 (4.34-6.77)

12+

4.90 (3.69-6.52)

6.95 (5.30-9.12)

Enabling Factors

Motor Vehicle Collision

No

1.00

1.00

Yes

1.67 (1.39-2.00)

1.37 (1.20-1.57)

Rural

No

1.00

1.00

Yes

0.75 (0.61-0.92)

0.98 (0.87-1.12)