This table contains 6960 series, with data for years 1994 - 1998 (not all combinations necessarily have data for all years), and was last released on 2007-01-29. This table contains data described by the following dimensions (Not all combinations are available): Geography (29 items: Austria; Belgium (French speaking); Canada; Belgium (Flemish speaking) ...) Sex (2 items: Males; Females ...) Age groups (3 items: 11 years; 13 years; 15 years ...) Ailments (8 items: Headache; Stomach ache; Feeling low (depressed); Backache ...) Frequency (5 items: Seldom or never; More than once a week; About once every month; About once every week ...).