Table 4 Intra- and inter-observer reliability of the sagittal spinopelvic parameters evaluated using intra- and inter-class correlation coefficients

 Observer 1

0.71 (0.61–0.83)

0.72 (0.58–0.81)

0.74 (0.61–0.84)

0.77 (0.61–0.85)

 Observer 2

0.67 (0.52–0.82)

0.69 (0.62–0.84)

0.73 (0.67–0.86)

0.76 (0.64–0.83)

 Observer 3

0.70 (0.64–0.82)

0.71 (0.65–0.87)

0.72 (0.64–0.87)

0.78 (0.63–0.82)

0.67 (0.55–0.76)

0.63 (0.53–0.74)

0.74 (0.58–0.83)

0.80 (0.61–0.84)