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Table 3 Psychometric properties at optimal cut-off values of self-rating anxiety scales for screening of any anxiety disorders in coronary artery disease patients (n = 523)

From: Screening for anxiety disorders in patients with coronary artery disease

Cut-off score N (%) Sensitivity,% (95% CI) Specificity,% (95% CI) PPV,% (95% CI) NPV,% (95% CI) Accuracy,% AUC (95% CI)
Hospital anxiety and depression scale – anxiety subscale
≥ 7 203 (39) 87 (71–95) 65 (60–69) 16 (12–22) 98 (96–99) 67 .81 (.74-.89)
8 148 (28) 82 (65–92) 76 (72–80) 21 (15–29) 98 (96–99) 76
≥ 9 100 (19) 66 (49–80) 85 (81–88) 25 (17–35) 97 (95–98) 83
Spielberger trait anxiety inventory
≥ 44 262 (50) 89 (74–97) 53 (48–57) 13 (9–18) 98 (96–100) 53 .80 (.73-.87)
45 246 (47) 89 (74–97) 56 (52–61) 14 (10–19) 99 (96–100) 56
≥ 46 229 (44) 84 (68–93) 59 (55–64) 14 (10–19) 98 (95–99) 59
Spielberger state anxiety inventory
≥ 39 267 (51) 84 (68–93) 52 (47–56) 12 (8–17) 98 (95–99) 54 .72 (.64-.79)
40 251 (48) 84 (68–93) 55 (50–59) 13 (9–18) 98 (95–99) 57
≥ 41 226 (43) 76 (59–88) 59 (55–64) 13 (9–18) 97 (94–99) 61  
  1. Optimal cut-off value in bold.
  2. AUC - area under the receiver operating curve; CI – confidence interval; NPV- negative predictive value; PPV - positive predictive value.