Table 1.
Description of the study population (n = 236,963)
| n | % | |
|---|---|---|
| Gender | ||
| Male | 115,581 | 48.8 |
| Female | 121,382 | 51.2 |
| Year of secondary school | ||
| 1st year lower sec. | 44,740 | 18.9 |
| 2nd year lower sec. | 44,239 | 18.7 |
| 3rd year lower sec. | 44,208 | 18.8 |
| 1st year upper sec. | 44,198 | 18.7 |
| 2nd year upper sec. | 35,887 | 15.1 |
| 3rd year upper sec. | 23,701 | 10.0 |
| Family finances past 2 years | ||
| Well off all the time | 108,135 | 45.6 |
| Mostly well off | 76,442 | 32.3 |
| Neither well off nor badly off | 39,961 | 16.9 |
| Mostly badly off | 9772 | 4.1 |
| Badly off all the time | 2653 | 1.1 |
| Cannabis use past 12 months | ||
| Not at all | 217,463 | 91.8 |
| Once | 6867 | 2.9 |
| 2–5 times | 6272 | 2.6 |
| 6–10 times | 1937 | 0.8 |
| 11 or more times | 4424 | 1.9 |
| Headache past month | ||
| Not at all | 48,907 | 20.6 |
| Sometimes | 115,114 | 48.6 |
| Many times | 56,404 | 23.8 |
| Every day | 16,538 | 7.0 |
| Neck and shoulder pain past month | ||
| Not at all | 85,921 | 36.3 |
| Sometimes | 92,965 | 39.2 |
| Many times | 40,641 | 17.2 |
| Every day | 17,436 | 7.4 |
| Joint and muscle pain past month | ||
| Not at all | 115,635 | 48.8 |
| Sometimes | 81,844 | 34.5 |
| Many times | 28,760 | 12.1 |
| Every day | 10,724 | 4.5 |
| Abdominal pain past month | ||
| Not at all | 84,815 | 35.8 |
| Sometimes | 101,094 | 42.7 |
| Many times | 41,950 | 17.7 |
| Every day | 9104 | 3.8 |
| Nausea past month | ||
| Not at all | 92,282 | 38.9 |
| Sometimes | 106,119 | 44.8 |
| Many times | 31,638 | 13.4 |
| Every day | 6924 | 2.9 |
| Palpitations past month | ||
| Not at all | 154,543 | 65.2 |
| Sometimes | 55,062 | 23.2 |
| Many times | 20,256 | 8.5 |
| Every day | 7102 | 3.0 |
| Felt that everything is a struggle past week | ||
| Not been affected | 63,658 | 26.9 |
| Been affected a little | 82,034 | 34.6 |
| Been affected quite a lot | 55,099 | 23.3 |
| Been affected a lot | 36,172 | 15.3 |
| Had sleep problems past week | ||
| Not been affected | 80,968 | 34.2 |
| Been affected a little | 84,843 | 35.8 |
| Been affected quite a lot | 44,259 | 18.7 |
| Been affected a lot | 26,893 | 11.3 |
| Felt unhappy, sad or depressed past week | ||
| Not been affected | 95,376 | 40.2 |
| Been affected a little | 76,162 | 32.1 |
| Been affected quite a lot | 39,976 | 16.9 |
| Been affected a lot | 25,449 | 10.7 |
| Felt hopeless about the future past week | ||
| Not been affected | 107,940 | 45.6 |
| Been affected a little | 64,914 | 27.4 |
| Been affected quite a lot | 37,956 | 16.0 |
| Been affected a lot | 26,153 | 11.0 |
| Felt stiff or tense past week | ||
| Not been affected | 98,613 | 41.6 |
| Been affected a little | 75,335 | 31.8 |
| Been affected quite a lot | 41,621 | 17.6 |
| Been affected a lot | 21,394 | 9.0 |
| Worried too much about things past week | ||
| Not been affected | 62,294 | 26.3 |
| Been affected a little | 67,702 | 28.6 |
| Been affected quite a lot | 60,729 | 25.6 |
| Been affected a lot | 46,238 | 19.5 |