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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.