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Table 3 Diagnostic test between two three index and congruency of the metatarsophalangeal joint

From: Radiographic evaluation of congruency of the first metatarsophalangeal joint in hallux valgus

Index

Critical value

Sensitivity

Specificity

AUC

P value

Youden index

PPV

NPV

+ LR

− LR

DMAA

12.125

0.399

0.747

0.554

0.163

0.146

0.594

0.259

1.577

0.534

 MTPJA

10.670

0.791

0.862

0.906

0.000

0.653

0.912

0.694

5.736

0.242

 CI

0.765

0.949

0.644

0.884

0.000

0.593

0.829

0.875

2.664

0.079

  1. DMAA distal metatarsal articular angle, MTPJA metatarsophalangeal joint angle, CI congruency index, AUC area under the curve, PPV positive predictive value, NPV negative predictive value, + LR positive likelihood ratio, − LR negative likelihood ratio