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Table 2 Results

From: The feasibility of the 1-h high-sensitivity cardiac troponin T algorithm to rule-in and rule-out acute myocardial infarction in Thai emergency patients: an observational study

Variable

0–3 h (n = 65)

0–1 h (n = 65)

p value

Primary outcome

 Observational zone cohort

12 (18.5% (CI 10.0–30.1))

Secondary outcome

 Rule-in/out time (min)

238 ± 63.3

134.3 ± 68.5

< 0.001

 Laboratory transport time (min)

18.3 ± 21.8

14.9 ± 13.6

0.29

 Laboratory processing time (min)

  First laboratory

53.0 ± 16.6

43.1 ± 17.7

0.001

  Secondary laboratory

44.5 ± 12.4

29.6 ± 10.9

< 0.001

 Time to disposition (min)

260 (180–325)

140 (106.5–220)

< 0.001

Triage type and 30-day MACE

 Rule in

23 (35.4)

14 (21.5)

0.001

  30-day MACE

18 (78.3)

11 (78.6)

 

  Sensitivity

69.2% (48.2, 85.7)

68.8% (41.1, 89)

 

  PPV

72% (55.6, 84.1)

73.3% (50.7, 88)

 

 Rule out

42 (64.6)

39 (60)

  30-day MACE

8 (19)

5 (12.8)

 

  Specificity

82.1% (66.5, 92.5)

89.5% (75.2, 97.1)

 

  NPV

80% (68.8, 87.9)

87.2% (76.5–93.4)

 

 Observational zone

12 (18.5)

  30-day MACE

 

2 (16.7)

 

Disposition type

 Admit

20 (30.8)

11 (16.9)

0.065

 Discharge

22 (33.8)

36 (55.4)

 

 Transfer to urgent room

20 (30.8)

17 (26.2)

 

 Refer

3 (4.6)

1 (1.5)

 
  1. Data was presented in mean ± SD, median (interquartile range) or 95% CI. Frequency was presented in n (%)
  2. Abbreviations: rule-in/out time time to rule-in/out, 0–1 h 1-h high-sensitivity cardiac troponin T algorithm, 0–3 h 3-h high-sensitivity cardiac troponin T algorithm, 30-day MACE major adverse cardiac events within 30 days, PPV positive predictive value, NPV negative predictive value