Table 5.

Discriminant validity of meniscal symptoms based on medical record review

Symptom	Sensitivity		Specificity		Likelihood Ratio
	Checklist (95% CI)	Expanded Description (95% CI)	Checklist (95% CI)	Expanded Description (95% CI)	Checklist (95% CI)	Expanded Description (95% CI)
Clicking	0.61 (0.52–0.70)	0.65 (0.56–0.73)	0.52 (0.45–0.59)	0.50 (0.43–0.58)	1.28 (1.04–1.58)	1.31 (1.08–1.60)
Giving way	0.47 (0.39–0.56)	0.69 (0.60–0.77)	0.51 (0.43–0.58)	0.53 (0.45–0.60)	0.96 (0.75–1.22)	1.46 (1.20–1.77)
Episodic pain	0.80 (0.72–0.86)	0.98 (0.93–0.99)	0.26 (0.20–0.33)	0.11 (0.07–0.16)	1.08 (0.95–1.22)	1.09 (1.03–1.16)
Catching	0.29 (0.22–0.38)	0.59 (0.50–0.67)	0.69 (0.61–0.75)	0.75 (0.68–0.80)	0.94 (0.65–1.35)	2.31 (1.72–3.01)
Pain with activity	0.97 (0.92–0.99)	0.89 (0.82–0.94)	0.07 (0.04–0.12)	0.16 (0.11–0.22)	1.04 (0.99–1.10)	1.06 (0.97–1.16)
Episodic swelling	0.68 (0.59 – 0.75)	0.71 (0.62–0.78)	0.38 (0.31–0.45)	0.42 (0.35–0.49)	1.09 (0.92–1.29)	1.22 (1.03–1.45)
Popping	0.44 (0.36–0.53)	0.49 (0.40–0.58)	0.61 (0.53–0.68)	0.63 (0.58–0.71)	1.14 (0.86–1.50)	1.33 (1.07–1.83)
Pain with pivoting/twisting	0.84 (0.76–0.90)	0.87 (0.79–0.92)	0.20 (0.15–0.26)	0.21 (0.16–0.28)	1.05 (0.94–1.17)	1.10 (0.99–1.22)
Localized pain	0.89 (0.82–0.93)	0.74 (0.65–0.81)	0.18 (0.13–0.25)	0.49 (0.31–0.56)	1.09 (0.99–1.20)	1.43 (1.20–1.71)
Change in quality/pattern of pain	0.68 (0.59–0.76)	0.55 (0.46–0.63)	0.32 (0.26–0.39)	0.50 (0.43–0.57)	1.00 (0.86–1.18)	1.09 (0.88–1.36)
Locking	0.33 (0.25–0.42)	0.47 (0.38–0.56)	0.73 (0.66–0.79)	0.74 (0.67–0.80)	1.23 (0.87–1.74)	1.78 (1.31–2.43)

Sensitivity and specificity calculated using the physician's impression, supported by MRI, as the criterion standard (see text and Electronic Index, Table 1).