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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