Table 1.
Number of individuals (%) using the Emergency Department (ED) or Urgent Care (UC) in the previous year by type of headache disorder: Results from the American Migraine Prevalence and Prevention 2005 survey.
| Number of Emergency Department or Urgent Care visits
n (%) |
Total | |||||||
|---|---|---|---|---|---|---|---|---|
| 0 | 1 | 2 | 3 | 4-6 | 7-10 | >10 | ||
| Migraine | 8602
(92.7) |
324
(3.5) |
158
(1.7) |
65
(0.7) |
80
(0.8) |
28
(0.3) |
23
(0.2) |
9280
(100) |
| Probable migraine | 2321
(97.4) |
36
(1.5) |
13
(0.5) |
2
(0.1) |
8
(0.3) |
1
(0.0) |
2
(0.1) |
2383
(100) |
| ETTH | 1125
(97.0) |
23
(2.0) |
7
(0.6) |
3
(0.3) |
0
(0.0) |
2
(0.2) |
0
(0.0) |
1160
(100) |
| Transformed migraine | 419
(84.5) |
30
(6.0) |
14
(2.8) |
18
(3.6) |
10
(2.0) |
3
(0.6) |
2
(0.4) |
496
(100) |
| CDH | 125
(94.7) |
2
(1.5) |
2
(1.5) |
0
(0.0) |
3
(2.4) |
0
(0.0) |
0
(0.0) |
132
(100) |
| Total | 12592
(93.6) |
415
(3) |
194
(1.4) |
88
(0.7) |
101
(0.8) |
34
(0.3) |
27
(.2) |
13451
(100) |
Notes: ETTH=episodic tension-type headache, CDH=chronic daily headache
Migraine, probable migraine, and ETTH are defined by ICHD-2 criteria. Transformed migraine and CDH are defined according to Silberstein/Lipton criteria25.