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Table 6 Previously reported prevalence of T-OLF and DISH

From: Epidemiology of ossification of the spinal ligaments and associated factors in the Chinese population: a cross-sectional study of 2000 consecutive individuals

Type Authors/reported year Country Race Sample Size Modality Prevalence rate
M (%) F (%) T (%)
T-OLF Guo et al. [9]/2010 China Asian 1736 MRI, CT 2.1 4.87 3.8
Mori et al. [29]/2013 Japan Asian 3013 Chest CT 38 33.9 36
Lang et al. [10]/2013 China Asian 993 Chest CT 68.5 59 63.9
Moon et al. [31]/2015 Korea Asian 2134 MRI 13.7 19 16.9
Fujimori et al. [16]/2016 Japan Asian 1500 PETCT 15 7.7 12
Kim et al. [4]/2018 Korea Asian 4999 Chest CT 23 20.1 21.8
Present study China Asian 2000 PETCT 36.10 40.75 37.65
DISH Julkunen et al. [41]/1975 Finland White 8993 Chest x-ray 3.8 2.6 2.6
Cassim et al. [42]/1990 South Africa African 1500 Chest x-ray 3.8 4.2 3.9
Weinfeld et al. [43]/1997 USA Mixed race 2364 Chest x-ray 25 15 NA
Kiss et al. [44]/2002 Hungary White 635 x-ray 27.3 12.8 19.8
Kim et al. [45]/2004 Korea Asian 3595 Chest x-ray 5.4 0.8 2.9
Westerveld et al. [46]/2008 Netherlands White 501 Chest x-ray 22.7 12.1 17
Kagotani et al. [6]/2015 Japan Asian 1647 Whole spine x-ray 22 4.8 11
Hirasawa et al. [47]/2016 Japan Asian 558 Chest-pelvis CT 38.7 13.9 27.2
Fujimori et al. [16]/2016 Japan Asian 1500 PETCT 16 6.2 12
Mori et al. [48]/2017 Japan Asian 3013 Chest CT 13 2.5 8.7
Hiyama et al. [49]/2018 Japan Asian 1479 Whole spine CT 21.1 16 19.5
Present study China Asian 2000 PETCT 4.87 1.80 3.85
  1. T total, M male, F female, T-OLF ossification of the ligamentum flavum of the thoracic spine, DISH diffuse idiopathic skeletal hyperostosis, CT computed tomography, NA not available, PETCT, positron emission tomography and computed tomography, MRI magnetic resonance imaging