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Table 2 Diagnostic accuracy of ultrasound findings for femoral proximal fracture and acute hip arthritis

From: Initial assessment of femoral proximal fracture and acute hip arthritis using pocket-sized ultrasound: a prospective observational study in a primary care setting in Japan

US findingsDiagnosisSn
(95% CI)
Sp
(95% CI)
PPV
(95% CI)
NPV
(95% CI)
Cortical discontinuityFemoral proximal fracture0.96 (0.80–1.00)0.92 (0.74–0.99)0.93 (0.76–0.99)0.96 (0.80–1.00)
Joint fluid retentionFemoral proximal fracture0.62 (0.41–0.80)0.77 (0.56–0.91)0.73 (0.50–0.89)0.67 (0.47–0.83)
Acute hip arthritis1.00 (0.42–1.00)0.65 (0.50–0.79)0.27 (0.11–0.50)1.00 (0.83–1.00)
Cortical discontinuity or joint fluid retentionFemoral proximal fracture or acute hip arthritis0.97 (0.84–1.00)0.90 (0.68–0.99)0.94 (0.80–0.99)0.95(0.74–1.00)
  1. US ultrasound, Sn sensitivity, Sp specificity, PPV positive predictive value, NPV negative predictive value, CI confidence interval