Table 2.
Mean and median duration, and total volume of treat-and-release visits at EDs by hospital and area characteristics
| Total Visits | Mean Duration* | Median Duration* | 95% Confidence Interval for Mean | |
|---|---|---|---|---|
| All visits |
4,955,590 |
195.7 |
130.2 |
(194.2 - 197.2) |
| Hospital State | ||||
| Arizona |
1,782,239 |
215.6 |
180.0 |
(214.6 - 216.5) |
| Massachusetts |
2,486,172 |
197.1 |
139.8 |
(194.2 - 200.1) |
| Utah |
687,179 |
138.4 |
60.0 |
(137.4 - 139.5) |
| Hospital Location | ||||
| Rural |
633,670 |
172.9 |
120.0 |
(163.2 - 182.6) |
| Urban |
4,134,985 |
199.7 |
135.6 |
(198.7 - 200.7) |
| Teaching Status | ||||
| Teaching |
1,427,968 |
243.8 |
180.0 |
(241.2 - 246.4) |
| Non-teaching |
3,313,266 |
175.6 |
120.0 |
(173.6 - 177.5) |
| Ownership Status | ||||
| Public |
304,453 |
180.0 |
120.0 |
(179.1 - 181.0) |
| Non-profit |
3,516,831 |
202.5 |
148.2 |
(200.4 - 204.6) |
| For-profit |
932,832 |
178.4 |
120.0 |
(177.6 - 179.3) |
| System Status | ||||
| Member |
1,503,759 |
187.6 |
128.4 |
(185.5 - 189.8) |
| Non-member |
3,264,896 |
200.1 |
130.8 |
(198.0 - 202.1) |
| Other Characteristics | ||||
| Non-trauma centers |
3,704,109 |
187.8 |
121.2 |
(186.0 - 189.5) |
| Level 1 trauma centers |
708,644 |
278.2 |
186.0 |
(273.0 - 283.4) |
| Level 2 trauma centers |
285,894 |
140.6 |
115.2 |
(139.7 - 141.4) |
| Level 3 trauma centers |
256,943 |
141.9 |
112.8 |
(139.9 - 144.0) |
| Hospital Bed Size | ||||
| Small |
1,013,957 |
172.4 |
121.2 |
(171.1 - 173.6) |
| Medium |
1,335,735 |
166.5 |
120.0 |
(164.0 - 169.0) |
| Large |
2,418,963 |
222.2 |
177.6 |
(219.5 - 224.9) |
| Median Household Income** | ||||
| $1 - $38,999 |
1,046,901 |
197.6 |
129.0 |
(196.2 - 198.9) |
| $39,000 - $48,999 |
1,229,219 |
198.2 |
127.2 |
(194.5 - 201.9) |
| $49,000 - $63,999 |
1,178,364 |
193.8 |
125.4 |
(189.1 - 198.4) |
| $64,000 and over | 1,265,601 | 195.6 | 139.8 | (194.3 - 197.0) |
Note: Data include all treat-and-release discharges at emergency departments during 2008 in Arizona, Massachusetts, and Utah.
* Duration is measured in minutes as the difference between admission and discharge time for each visit.
** This is a quartile classification of the estimated median household income of residents in the patient's ZIP Code. Further details are available at http://www.hcup-us.ahrq.gov/db/vars/zipinc_qrtl/nisnote.jsp.