Table 2 Prevalence of each type of spinal ligament ossification

4.10 [3.23–4.97]

4.12 [3.05–5.19]

4.06 [2.56–5.56]

0.949

2.25 [1.60–2.90]

1.57 [0.90–2.24]

3.61 [2.19–5.03]

0.004

0.80 [0.41–1.19]

0.75 [0.29–1.21]

0.90 [0.18–1.62]

0.717

0.25 [0.03–0.47]

0.22 [0–0.48]

0.30 [0–0.72]

1.000

37.65 [35.52–39.78]

36.10 [33.53–38.68]

40.75 [37.01–44.50]

0.043

1.45 [0.93–1.97]

1.04 [0.50–1.60]

2.26 [1.12–3.39]

0.033

6.60 [5.51–7.69]

7.86 [6.42–9.31]

4.06 [2.56–5.56]

0.001

19.15 [17.42–20.88]

22.17 [19.94–24.40]

13.08 [10.51–15.65]

< 0.001

1.95 [1.34–2.56]

2.47 [1.64–3.31]

0.90 [0.18–1.62]

0.017

31.50 [29.46–33.54]

38.58 [35.96–41.19]

17.29 [14.41–20.18]

< 0.001

3.85 [3.01–4.69]

4.87 [3.71–6.02]

1.80 [0.79–2.82]

0.001