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. 2007 Feb 12;7:19. doi: 10.1186/1472-6963-7-19

Table 4.

Relationships of average waiting time to distance, traffic intensity, and home visit intensity, time of day and urgency

Number of consultations Average waiting time in minutes Standard deviation Significance
Total 5827 30.5 27.4
Distance in km 0.00
0.0–2.4 1326 26.6 28.5
2.5–4.9 1673 28.6 28.2
5.0–7.4 842 31.7 28.4
7.5–9.9 610 30.3 25.9
10.0–14.9 616 33.7 25.4
15.0–19.9 505 36.6 23.1
≥ 20.0 255 40.0 23.1
Traffic intensity 0.00
Off-peak hours 2083 28.2 25.6
Intermediate hours 2487 31.2 27.8
Rush hours 1270 32.8 28.9
Home visit intensity 0.01
No visit 1336 22.8 17.4
1 or 2 visits 2836 29.9 26.4
≥ 3 visits 1600 37.9 33.2
Time of day 0.00
Evening 2685 29.9 25.6
Night 1495 25.0 21.7
Daytime in the weekend 1658 36.4 32.9
Urgency 0.00
U1, Life-threatening 205 13.9 11.3
U2, acute 1613 23.1 18.5
U3, urgent 1915 33.1 28.7
U4, routine 1845 36.2 30.9