Table 6.

Univariate and Multivariate Analysis (Forward Model) for All Sprains and Severe Sprains ^a

			95% CI for Exp(B)
Risk Factor	P Value	Exp(B)	Lower	Upper
All sprains (n = 45)
Univariate
Peak force V	.149	0.802	0.594	1.082
Peak force AP	.767	0.953	0.696	1.306
RMS ML 0.4	.017	0.680	0.496	0.933
Hor GRF dyn	.747	1.051	0.776	1.424
Hor GRF late dyn	.072	1.296	0.977	1.720
TTS VRAW 1.5	.763	0.954	0.705	1.292
Multivariate b
RMS ML 0.4	.007	0.656	0.481	0.893
Hor GRF late dyn	.029	1.377	1.034	1.834
Severe sprains (n = 32)
Univariate
Peak force V	.026	0.678	0.481	0.955
Peak force AP	.182	0.775	0.533	1.127
RMS ML 0.4	.012	0.613	0.419	0.898
Hor GRF dyn	.362	1.183	0.824	1.699
Hor GRF late dyn	.016	1.486	1.077	2.051
TTS VRAW 1.5	.426	1.168	0.797	1.711
Multivariate c
RMS ML 0.4	.005	0.596	0.413	0.858
Hor GRF late dyn	.006	1.573	1.135	2.178

^aExp(B) is the ratio of the hazards between 2 players whose outcome value on the risk factor differs by 1 unit (z score) when all other covariates are held constant. Bold values indicate a significant effect (P < .05). See Outcome Measures section for definitions. GRF, ground-reaction force.

^bForward step 2 (P = .005).

^cForward step 2 (P = .001).