Table 2. Comparison of Demographic and Clinical Variables on Total Completers^* vs Partial Completers^**.

Variables	Follow-up at 3, 6 and 12 months		Exact P
	No (N=47)	Yes (N=56)
Type of injury			0.737
MVA	25(55.6%)	32(59.3%)
Fall	11(24.4%)	9(16.7%)
Assault	9(20.0%)	12(22.2%)
Other	0	1(1.85%)
Severity			0.413
Mild	31(66.0%)	30(56.6%)
Moderate & Severe	16(34.0%)	23(43.4%)
Any axis-I psychiatric diagnosis prior to TBI
No	10(21.3%)	17(30.4%)	0.370
Yes	37(78.7%)	39(69.4%)
Any depression prior to TBI
No	41(87.2%)	44(78.6%)	0.304
Yes	6(12.8%)	12(21.4%)
Substance dependence or abuse prior to TBI
No	23(48.9%)	29(53.7%)	0.692
Yes	24(51.6%)	25(46.3%)
GMHR prior to TBI			0.515
1	1(2.2%)	0
2	4(8.7%)	2(3.6%)
3	3(6.5%)	4(7.1%)
4	38(82.6%)	50(89.3%)

^*completed follow-up at all three time points: 3, 6 and 12 months

^**did not complete follow up (i.e. missed follow up at either 3, 6 or 12 months)