From: Impact of continuing or quitting smoking on episodic cluster headache: a pilot survey
Variable | Total (n = 200) | Current smokers (n = 120) | Former smokers (n = 42) | Never smokers (n = 38) | ||||
---|---|---|---|---|---|---|---|---|
 | Mean± SD | Range | Mean± SD | Range | Mean± SD | Range | Mean± SD | Range |
Age of onset (years) | 29.81± 13 | 11 - 74 | 29.63 ± 12 | 11- 65 | 28.66 ± 13 | 15 - 74 | 31.63 ± 17 | 16 - 72 |
Length of CH (years) | 18.6 ± 11 | 1 - 49 | 18.28 ± 9 | 2 - 40 | 22.28 ± 12a | 4 - 58 | 15.52 ± 13 | 1 - 49 |
Length of active period (weeks) | 10.24 ± 8 | 1 - 40 | 12.38 ± 10b | 2 - 40 | 8.24 ± 7 | 1 - 40 | 5.68 ± 4 | 1 - 20 |
Maximum number of attacks/day | 3.14 ± 1 | 1 - 8 | 3.38 ± 1c | 1 - 8 | 3.04 ± 2 | 1 - 8 | 2.47 ± 1 | 1 - 6 |
N. of active period | N. | % | N. | % | N. | % | N. | % |
1/year | 38 | 19 | 26 | 22 | 0 | 0 | 12 | 31 |
>1/year | 27 | 13.5 | 17 | 14 | 4 | 10 | 6 | 16 |
<1/years | 72 | 36 | 43 | 36 | 17 | 40 | 12 | 32 |
Erratic | 63 | 31.5 | 34 | 28 | 21d | 50 | 8 | 21 |