Table 6

Treatment Times by Workday Hours Versus Off-Hours

2004 (n = 109)2005–2008 (n = 568)
Workday HoursOff-Hoursp ValueWorkday HoursOff-Hoursp Value
Onset of chest pain to arrival at referring hospital76 [45, 142]75 [55, 126]0.9697 [54, 154]89.5 [55, 162]0.99
Arrival at referring hospital to arrival at PCI hospital92 [80, 117]92.5 [72, 140]0.7572 [58, 92]72 [55, 94]0.94
Arrival at referring hospital to ECG time5 [2, 15]9 [3, 15]0.445 [1, 9]5 [1, 11]0.45
 ECG to helicopter dispatch time23 [16, 40]18 [9.5, 49]0.5714 [7, 26]14 [9, 22]0.51
 Helicopter dispatch to arrival at PCI hospital57 [50, 66]49 [42, 63]0.04949 [38, 62]47 [36, 62]0.85
Arrival at PCI hospital to balloon inflation77 [52, 90]93.5 [62, 116)0.00727 [20, 38]26 [20, 35]0.51
 Arrival at PCI hospital to catheterization laboratory38 [22, 50]52 [37, 73]0.0016 [4, 13]7 [4, 12]0.80
Door-to-balloon time <90 min, %0%2%1.0037%37%0.94
Door-to-balloon time <120 min, %17%8%0.1574%71%0.47

All times are presented as medians and interquartile ranges [Q1, Q3] in minutes.

Abbreviations as in Table 1.