Table 2.

Multifidus lift test interrater reliability

Procedure	Kappa	95% CI	Percent Agreement	Prevalence Index	Bias Index
L4/L5 no weight (N = 32)	0.75*	0.52, 0.97	86	0.06	0.06
L4/L5 with weight (N = 30)	0.79*	0.57, 1.00	90	0.23	0.10
L5/S1 no weight (N = 32)	0.81*	0.62, 1.00	91	0.03	0.09
L5/S1 with weight (N = 30)	0.80*	0.59, 1.00	90	0.10	0.10

^*P < 0.001