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Table 3 Comparison of Variables Between Subjects with Normal LVEF (≥55%) and Reduced LVEF(< 55%)

From: The effects of prehospital system delays on the treatment efficacy of STEMI patients

Variable LVEF n x Sd me IQR p
Age [years] ≥ 55% 74 63.6 10.2 0.6A
<  55% 478 64.4 11.9
Distance from Hospital [km] ≥ 55% 74 8.2 3.2–19.2 0.01B
<  55% 478 11.1 5.4–23.4
Time from FMC to Hospital Admission [min] ≥ 55% 74 44 36–54 0.005B
<  55% 478 49 41–61
Time from FMC to PCI [min] ≥ 55% 74 84 70–95 0.076B
<  55% 478 87 75–103
  1. LVEF left ventricular ejection fraction, n sample, x sample mean, Sd standard deviation, me mean, IQR interquartile range, p p value
  2. A - p value from t-Student test
  3. B - p value from U Mann-Whitney test