Research Article

Detecting Substance Abuse in the Emergency Department: A 10-Year Comparative Study

Table 1

(a) Years, days, (b) hour interval.
(a)

Chi-square: 0.021DaysTotal
SundayThursdayMondayTuesdayWednesdaySaturdayFriday

200078566237338366415
18.8%13.5%14.9%8.9%8.0%20.0%15.9%100.0%

201085575345666581452
18.8%12.6%11.7%10.0%14.6%14.4%17.9%100.0%

(b)

Chi-square: 0.000 Hour intervalTotal
0–4 h4–8 h8–12 h12–16 h16–20 h20–24 h

20006844346982118415
16.4%10.6%8.2%16.6%19.8%28.4%100.0%

20101043969798180452
23.0%8.6%15.3%17.5%17.9%17.7%100.0%