Table 1 Characteristics (i.e., sex and diagnosis) of the study population according to age group (≥ 65 vs. < 65 years)
Patients ≥ 65 years (% of patients ≥ 65 years) | Patients < 65 years (% of patients < 65 years) | Chi2-Test (χ2, df, p) | Post-hoc Chi2 (χ2, df, p) | |
|---|---|---|---|---|
Total | 99,099 (100%) | 363,562 (100%) | ||
Sex | ||||
Females | 67,655 (68.3%) | 190,935 (52.5%) | χ2 = 7837.955; df = 1; p < 0.001 | |
Males | 31,444 (31.7%) | 172,627 (47.5%) | ||
Diagnosis (ICD-10) | ||||
Organic disorders (F0)a | 32,677 (33.0%) | 23,742 (6.5%) | χ2 = 64,910.712; df = 5; p < 0.001 | χ2 = 50,856.358; df = 1; p < 0.001 |
Substance-related disorders (F1) | 2217 (2.2%) | 18,420 (5.1%) | χ2 = 1462.853; df = 1; p < 0.001 | |
Schizophrenia (F2) | 15,940 (16.1%) | 142,097 (39.1%) | χ2 = 18,316.130; df = 1; p < 0.001 | |
Depressive disorders (F3 without F30, F31.0–F31.2) | 40,685 (41.1%) | 117,313 (32.3%) | χ2 = 2673.889; df = 1; p < 0.001 | |
Acute mania (F30, F31.0–F31.2) | 2344 (2.4%) | 10,823 (3.0%) | χ2 = 105.358; df = 1; p < 0.001 | |
Others (F4–F9) | 5236 (5.3%) | 51,167 (14.1%) | χ2 = 5620.874; df = 1; p < 0.001 | |