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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