Research Article
The Temporal Relationship between Selected Mental Disorders and Substance-Related Disorders: A Nationwide Population-Based Cohort Study
Table 1
The distribution of sociodemographic characteristics between mental illness and control cohorts and of the mental illness at baseline.
| | Mental Illness | Control | -value | (N=124,423) | (N=124,423) | N | (%) | N | (%) |
| Disease category | | | | | | Neurotic disorders | 114,114 | (91.71%) | | | | Affective psychoses | 21,754 | (17.48%) | | | | Adjustment reaction | 6,133 | (4.93%) | | | | Schizophrenia | 3,297 | (2.65%) | | | | Personality disorders | 1,710 | (1.37%) | | | | Age (years) | 48.84 | (17.10) | 48.78 | (17.11) | 0.436 | 10-19 | 4964 | (3.99%) | 5161 | (4.15%) | 0.548 | 20-29 | 14632 | (11.76%) | 14517 | (11.67%) | | 30-39 | 20091 | (16.15%) | 20106 | (16.16%) | | 40-49 | 26809 | (21.55%) | 26899 | (21.62%) | | 50-59 | 23298 | (18.72%) | 23158 | (18.61%) | | 60-69 | 18124 | (14.57%) | 18135 | (14.58%) | | ≥70 | 16505 | (13.27%) | 16447 | (13.22%) | | Gender | | | | | 0.708 | Male | 48529 | (39.00%) | 48438 | (38.93%) | | Female | 75894 | (61.00%) | 75985 | (61.07%) | | Urban level | | | | | 1.000 | Highest urbanization | 28284 | (22.73%) | 28281 | (22.73%) | | High urbanization | 34946 | (28.09%) | 34943 | (28.08%) | | Moderate | 21999 | (17.68%) | 22002 | (17.68%) | | Low urbanization | 21939 | (17.63%) | 21931 | (17.63%) | | Lowest urbanization | 17255 | (13.87%) | 17266 | (13.88%) | | Income level (NT$) | | | | | 1.000 | ≦18,780 | 61421 | (49.36%) | 61418 | (49.36%) | | 18,780-22,800 | 33219 | (26.70%) | 33209 | (26.69%) | | 22,801-28,800 | 7347 | (5.90%) | 7339 | (5.90%) | | 28,801-36,300 | 7723 | (6.21%) | 7719 | (6.20%) | | 36,301-45,800 | 7583 | (6.09%) | 7576 | (6.09%) | | ≧45,800 | 7130 | (5.73%) | 7162 | (5.76%) | |
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: the denominator for each of the selected MI is 124,423; denotes the value for testing the mean difference on age variable between two groups. |