Table 2 Results from the inter- and intra-agreement analysis for the two observers presented separately for spondylolisthesis and kyphosis

Spondylolisthesis slip (SSlip; mm)

Junior T₀

vs.

Senior

-0.3

(-0.6 – -0.04)

0.024

1.4

1.2

1.0

(0.9 − 1.2)

2.8

(2.5–3.2)

0.49

(0.30–0.63)

Junior T_3m

vs.

Senior

0.1

(-0.03–0.3)

0.11

0.8

0.5

0.5

(0.4–0.6)

1.5

(1.2–1.8)

0.80

(0.70–0.87)

Junior T_3m

vs.

Junior T₀

0.5

(0.2–0.7)

< 0.001

1.3

1.1

1.0

(0.8–1.1)

2.7

(2.3–3.0)

0.56

(0.41–0.67)

Kyphosis measured with modified K-line interval (mK-line INT; mm)

Junior T₀

vs.

Senior

0.2

(-0.1–0.5)

0.11

1.3

0.9

0.9

(0.7–1.1)

2.6

(2.1–3.2)

0.90

(0.84–0.94)

Junior T_3m

vs.

Senior

-0.1

(-0.3–0.04)

0.15

0.8

0.6

0.6

(0.5–0.7)

1.6

(1.3–1.8)

0.96

(0.94–0.98)

Junior T_3m

vs.

Junior T₀

-0.3

(-0.6 – -0.03)

0.030

1.5

1.1

1.1

(0.9–1.3)

3.0

(2.4–3.5)

0.88

(0.81–0.93)