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Table 3 SE, SP, PPV and NPV for TDM methods for detecting virologic failure for different ARV drugs

From: Antiretroviral concentration measurements as an additional tool to manage virologic failure in resource limited settings: a case control study

Drug

SE (95% CI)

SP (95% CI)

PPV (95% CI)

NPV (95% CI)

Nevirapine

27.7 (16.8–38.6)

94.0 (89.6–98.3)

72.0 (54.4–89.6)

69.9 (62.7–77.1)

Efavirenz

41.6 (30.6–52.6)

89.1 (85.0–93.2)

57.1 (44.2–70.1)

81.4 (76.5–86.3)

Lopinavir

44.1 (27.4–60.8)

83.3 (68.4–98.2)

78.9 (60.6–97.3)

51.3 (35.6–67.0)

Atazanavir

53.3 (28.1–78.6)

85.7 (70.7–99.0)

72.7 (46.4–99.0)

72.0 (54.4–89.6)

Overall

38.2 (31.3–45.1)

90.1 (87.1–93.1)

65.8 (56.9–74.6)

74.5 (70.5–78.4)

  1. SE sensitivity, SP specificity, PPV positive predictive value, NPV negative predictive value