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Table 3 Test characteristics of ACI-TIPI to predict 30-day MACE

From: Prognostic utility of the acute cardiac ischemia time-insensitive predictive instrument (ACI-TIPI)

ACI-TIPI Score (%)

No.

Sensitivity (95% CI)

Specificity (95% CI)

PPV (95% CI)

NPV (95% CI)

LR+

LR-

≥ 10

120

100 (82-100)

13.7 (8-21)

15.8 (10-24)

100 (79-100)

1.2

0

≥ 20

111

100 (82-100)

21.4 (14-30)

17.1 (11-25)

100 (86-100)

1.3

0

≥ 30

84

94.7 (74-100)

43.6 (34-53)

21.4 (13-32)

98.1 (90-100)

1.7

0.1

≥ 40

39

42.1 (20-67)

73.5 (65-81)

20.5 (9-36)

88.7 (81-94)

1.6

0.8

  1. ACI-TIPI, acute cardiac ischemia-time insensitive predictive instrument; MACE, major adverse cardiac events (non-ST elevation myocardial infarction (NSTEMI), percutaneous coronary intervention, coronary artery bypass grafting, and all-cause mortality); CI, confidence intervals; PPV, positive predictive value; NPV, negative predictive value. LR+, positive likelihood ratio; LR-, negative likelihood ratio