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. 2018 May 8;2018:8618703. doi: 10.1155/2018/8618703

Table 2.

Reliability parameters of the screening questionnaires.

Parameter Axial Q versus clinical D Per. Q versus clinical D US versus clinical D
Sensitivity 87.5% (67.6–97.3) 82.8% (64.2–94.2) 50.5% (36.4–71.9)
Specificity 89.8% (81.5–92.2) 87.4% (79–93.3) 64.9 (53.2–75.4)
Positive LR 8.6 (4.5–16.2) 6.6 (3.8–11.4) 1.6 (1.1–2.4)
Negative LR 0.14 (0.05–0.4) 0.2 (0.09–0.4) 0.7 (0.5–1)
PPV 70% (50.6–85.3) 66.7% (49–81.4) 40% (25.7–55.7)
NPV 96.3% (89.7–99.2) 94.3% (87.2–98.1) 76.9% (64.8–88.5)

LR: likelihood ratio; Q: questionnaire; Per: peripheral; D: diagnosis; US: ultrasound; PPV: positive predictive value; NPV: negative predictive value.