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Table 4 Models using clinical, radiological and DXA variables

From: Dual energy x-ray absorptiometry analysis contributes to the prediction of hip osteoarthritis progression

  Variables % Diff. & p -2 Log R2 AIC AUC TNR TPR
1 KL score affected side: 30.7% (***) 159.5 0.31 163.5 0.76 93.2 37.2
2 DXA affected side:   184.2 0.15 192.2 0.69 97.3 9.3
  - BMC medial part femoral head 13.9% (***)       
  - BMC inferior part femoral head 7.2% (***)       
  - BMC femoral neck 5%(*)       
3 DXA affected side + KL:   148.6 0.38 158.6 0.83 93.9 34.9
  - BMC medial part femoral head 13.9%(*)       
  - BMC inferior part femoral head 7.2%(*)       
  - BMC femoral neck 5%(**)       
  - KL affected side NA(***)       
4 KL affected side + Delta KL   154.0 0.35 160 0.82 93.9 34.9
  - KL score affected side NA(***)       
  - Delta KL 32%(*)       
5 DXA ROI'S difference:   135.6 0.45 153.6 0.84 91.7 51.2
  - Difference superior area fem head 16.5% (*)       
  - Difference trochanteric area size 2% (*)       
  - Difference BMD sup. part fem. head 5.7% (**)       
  - Difference BMC sup. part fem. head 9% (**)       
  - Difference BMD med. part fem. head 4.6% (**)       
  - Difference BMC med. part fem. head 4% (**)       
  - Difference Intertrochanteric area size -4.5% (*)       
  - KL score affected side NA(***)       
  1. The difference in values between affected hip and contralateral side is expressed in percentage (%). Positive values represent an increase in the affected hip. No applicable (NA) in the cases that the variable only reflect the affected side. Level of significance codes: '***' P value < 0.001, '**' P value < 0.01, '*' P value < 0.05. All models were corrected for patient characteristics. TPR and TNR columns correspond to the percentage correctly predicted by the models. *Area under the curve value obtained after 10-fold cross validation process.
  2. AIC = An Information Criterion; AUC = areas under the curve; DXA = dual energy X-ray absorptiometry; KL = Kellgren and Lawrence score of the affected side; ROI = rate opf interest; TNR = true negative rate TPR = true positive rate