Table 2.

Univariate effect of collected variables on peak block level.

Characteristic	β	SE	Standardized β	p	R2	Adjusted R2
Bupivacaine dose	0.81	0.04	0.71	< 0.001	0.506	0.505
Height	− 0.10	0.02	− 0.30	< 0.001	0.092	0.090
Weight	− 0.01	0.01	− 0.06	0.242	0.003	0.001
Sex (Female vs. male)	1.95	0.33	0.28	< 0.001	0.077	0.075
Age					0.019	0.015
76–85 vs. ≤ 75	1.26	0.47	0.13	0.008
> 85 vs. ≤ 75	1.12	0.78	0.07	0.152

β, regression coefficient; SE, standard error; R², coefficients of determination.