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Table 3 Agreement in the identification and establishment of osteoporosis using TDXA and TNHA cut-off values

From: Comparison of the prevalence of osteoporosis in people with spinal cord injury according to bone mineral density reference values for the diagnosis of osteoporosis: a retrospective, cross-sectional study

Based on the TNHA

Based on the TDXA

Total N (%)

 

Normal

Osteopenia

Osteoporosis

pa

kb

N (%)

N (%)

N (%)

Male

    

 < 0.0001***

0.6815

 Normal

124 (20.43)

1 (0.16)

0 (0.00)

125 (20.59)

 

 Osteopenia

66 (10.87)

252 (41.52)

2 (0.33)

320 (52.72)

 

 Osteoporosis

1 (0.16)

70 (11.53)

91 (14.99)

162 (26.69)

 

 Total

191 (31.47)

323 (53.21)

93 (15.32)

607 (100)

 

Female

    

 < 0.0001***

0.5158

 Normal

16 (6.45)

0 (0.00)

0 (0.00)

16 (6.45)

 

 Osteopenia

22 (8.87)

38 (15.32)

0 (0.00)

60 (24.19)

 

 Osteoporosis

0 (0.00)

65 (26.21)

107 (43.15)

172 (69.35)

 

 Total

38 (15.32)

103 (41.53)

107 (43.15)

248 (100)

 
  1. Abbreviations: TDXA T-score provided by the DXA manufacturer, TNHA T-score provided by a single reference population of the NHANES
  2. aMcNemar test
  3. bKappa
  4. For *, **, and ***, the mean difference is significant at the 0.05, 0.01, and 0.001 levels, respectively. Statistical significance is set at p < 0.05