Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Differences in cluster headache characteristics in episodic versus chronic forms
| Episodic | Chronic | Significance (t test) | |
|---|---|---|---|
| Duration of cluster headache disorder (years) | 15.09 ± 10.77 | 17.40 ± 12.214 | p = 0.004 |
| Age at onset (years) | 28.94 ± 11.75 | 29.27 ± 12.44 | p = 0.038 |
| Attack duration (minutes) | 97.90 ± 99.84 | 147.36 ± 145.23 | p = 0.000 |
| Attacks per day | 3.63 ± 2.820 | 4.31 ± 3.487 | p = 0.000 |
| Attack intensity (VRS 0–4) | 3.60 ± 0.59 | 3.42 ± 0.64 | p = 0.003 |
