Table 4.

Univariate regression summary for the dependent variable F_{neck_atten} for only the subset of hip protectors with a geometry_type that touched the skin overlying the greater trochanter. Unstandardized regression coefficients, p values, and unadjusted r values are provided.

	Regression coefficient			p value			Unadjusted r
	2 m/s	3 m/s	4 m/s	2 m/s	3 m/s	4 m/s	2 m/s	3 m/s	4 m/s
k₅₀₀	−0.082	−0.059	NA	0.001^*	0.001^*	NA	0.676	0.670	NA
k₂₀₀₀	−0.005	−0.012	NA	0.636	0.115	NA	0.110	0.354	NA
k₃₀₀₀	0.006	<0.001	NA	0.313	0.973	NA	0.231	0.008	NA
E_abs	1.307	1.493	NA	0.073^*	0.002^*	NA	0.399	0.635	NA
E_dis	0.628	0.972	NA	0.303	0.018^*	NA	0.236	0.509	NA
E_dis%	−0.443	6.320	NA	0.969	0.435	NA	0.009	0.180	NA
Height	0.044	−0.033	NA	0.733	0.718	NA	0.079	0.084	NA
Width	0.199	0.148	NA	0.058^*	0.049^*	NA	0.420	0.434	NA
Thick_pad	1.186	1.038	NA	0.022^*	0.004^*	NA	0.498	0.607	NA
Thick_wearing	0.892	0.887	NA	0.106^*	0.020^*	NA	0.362	0.502	NA
Volume	<0.001	<0.001	NA	0.003^*	0.001^*	NA	0.610	0.653	NA

Indicates significant univariate predictors that were used as inputs in the multivariate models that included hip protectors that touched the skin overlying the greater trochanter (thick_wearing at 2 m/s included as it was of borderline significance). Analyses for this subset of hip protectors were not conducted for F_{neck_atten} at 4 m/s as univariate analyses including all hip protectors (Table 3) found no significant effect of geometry_type at this impact velocity.