Impact of continuing or quitting smoking on episodic cluster headache: a pilot survey

Table 1 Demographic data

Variable	Total (n = 200)		Current smokers (n = 120)		Former smokers (n = 42)		Never smokers (n = 38)
Mean age ± SD (years)	48.41 ± 12		47.91 ± 11		50.95 ± 12		47.16 ± 16
Range	25 - 85		25 - 85		32 - 78		30 - 81
	N.	%	N.	%	N.	%	N.	%
Females	28	14	18^a	15	0	0	10	26.3
Males	172	86	102	85	42^b	100	28	73.7
Education
Primary school	20	10	8	6.6	2	4.7	10^{c, d}	26.3
Middle school	70	35	54^e	45	12	28.5	4	10.6
High school	74	37	40^a	33.4	24	57.3	10^d	26.3
University degree	36	18	18	15	4	9.5	14^{d, e}	36.8
Occupation
Employed	160	80	94	78.3	36	85.7	30	78.9
Housewife	2	1	2	1.7	0	0	0	0
Retired person	28	14	14	11.7	6	14.3	8	21.1
Unemployed	10	5	10	8.3	0	0	0	0
Marital status
Living with a partner	120	60	70^a	58.3	14	33.3	22	57.9
Living alone	80	40	50	41.7	28	66.7	16	42.1

^a Current vs. former smokers: P < 0.025; ^b Former vs. never smokers: P < 0.001; ^c Never vs. current smokers: P < 0.025; ^d Never vs. former smokers: P < 0.025; ^e Current vs. never smokers: P < 0.025, Chi-square test with Bonferroni correction.

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