Table 2.

Interexaminer agreement.

Spinal level	Kappa	95% CI	% agreement	Prevalence index	Bias index	PABAK
Nonstandardized approach to assessment of segmental restriction
T5–7	0.12	−0.02, 0.27	44	−0.20	0.56	−0.12
T6–8	−0.14	−0.48, 0.18	40	−0.16	0.28	−0.20
T7–9	−0.05	−0.44, 0.35	48	−0.08	0.04	−0.04
T8–10	−0.27	−0.63, 0.10	36	0.12	0.16	−0.28
T9–11	−0.16	−0.45, 0.12	32	0.16	0.44	−0.36
T10–12	0.19	0.00, 0.39	52	0.20	0.48	0.04
Standardized approach to assessment of segmental restriction
T5–7	0.36	0.00, 0.72	68	0.04	−0.08	0.36
T6–8	0.19	0.20, 0.57	60	−0.12	0.00	0.20
T7–9	−0.14	−0.48, 0.19	44	−0.28	0.24	−0.12
T8–10	0.09	−0.14, 0.31	44	−0.04	0.48	−0.12
T9–11	0.09	−0.15, 0.32	48	0.24	0.44	−0.04
T10–12	0.12	−0.10, 0.34	64	0.56	0.36	0.28
Nonstandardized approach to assessment of segmental pain
T5–7	−0.25	−0.57, 0.07	44	0.36	0.16	−0.12
T6–8	−0.17	−0.55, 0.21	44	0.20	0.00	−0.12
T7–9	0.10	−0.25, 0.46	56	0.24	−0.20	0.12
T8–10	−0.38	−0.58, −0.18	44	0.44	−0.08	−0.12
T9–11	−0.15	−0.48, 0.17	52	0.44	0.16	0.04
T10–12	0.12	−0.17, 0.41	60	0.44	0.32	0.20
Standardized approach to assessment of segmental pain
T5–7	0.29	−0.11, 0.68	72	0.48	−0.12	0.44
T6–8	0.32	−0.03, 0.68	68	0.28	−0.16	0.36
T7–9	0.27	−0.10, 0.64	64	0.16	0.12	0.28
T8–10	0.22	−0.08, 0.51	60	0.28	0.32	0.20
T9–11	0.09	−0.08, 0.25	56	0.48	0.44	0.12
T10–12	0.00	−0.26, 0.26	68	0.18	−0.18	0.00

N/A = not applicable, when at least one variable in each 2-way table upon which measures of association are computed is a constant.