. 2020 Apr 1;22:90–94. doi: 10.1016/j.jor.2020.03.056

Table 3.

Intra-observer and inter-observer reliability.

Spinopelvic Parameter	Reviewer 1 Intra-observer Reliability (95% CI)	Reviewer 2 Intra-observer Reliability (95% CI)	Inter-observer Reliability (95% CI)
Pelvic Incidence (lateral)	0.98 (0.95, 0.99)^a	0.98 (0.97, 0.99)^a	0.96 (0.16, 0.99)^a
Pelvic Incidence (FP)	0.96 (0.91, 0.98)^a	0.95 (0.88, 0.98)^a	0.97 (0.93, 0.99)^a
Sacral Slope (lateral)	0.97 (0.93, 0.99)^a	0.95 (0.90, 0.98)^a	0.97 (0.87, 0.99)^a

Abbreviations: FAI – Femoroacetabular impingement; FP – False profile; 95% CI – 95% confidence interval.

Indicates excellent reliability (kappa >0.75).