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Table 2 Characteristics of episodic cluster headache in current, former, and never smokers patients

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
  1. a Former vs. current and vs. never smokers: P < 0.05; b Current vs formers vs. and vs. never smokers: P < 0.05; c Current vs. never smokers: P < 0.05, ANOVA followed by Newman-Keuls post-hoc testing; d Former vs. current and vs. never smokers: P < 0.025, Chi-square test with Bonferroni correction.