Smoking	Age	Sex	Headaches	Freq
Yes	Under40	Men	Morethweek	11
Yes	Under40	Men	Lessthweek	142
Yes	Under40	Women	Morethweek	45
Yes	Under40	Women	Lessthweek	83
Yes	Over40	Men	Morethweek	11
Yes	Over40	Men	Lessthweek	145
Yes	Over40	Women	Morethweek	15
Yes	Over40	Women	Lessthweek	76
Not	Under40	Men	Morethweek	8
Not	Under40	Men	Lessthweek	117
Not	Under40	Women	Morethweek	29
Not	Under40	Women	Lessthweek	89
Not	Over40	Men	Morethweek	7
Not	Over40	Men	Lessthweek	113
Not	Over40	Women	Morethweek	8
Not	Over40	Women	Lessthweek	80
