Years in the high-cost state among patients with mental illness and high-cost status in Ontario, by nonattrition and attrition cohorts (2010–2017)
| No. of years in high-cost state | No. (%) of all patients in high-cost state n = 52 638 | No. (%) of patients in nonattrition cohort* n = 45 663 | No. (%) of patients in attrition cohort† n = 6975 |
|---|---|---|---|
| 1 | 9510 (18.1) | 8491 (18.6) | 1019 (14.6) |
| 2 | 8236 (15.7) | 6858 (15.0) | 1378 (19.8) |
| 3 | 6757 (12.8) | 5540 (12.1) | 1217 (17.5) |
| 4 | 5408 (10.3) | 4403 (9.6) | 1005 (14.4) |
| 5 | 4578 (8.7) | 3747 (8.2) | 831 (11.9) |
| 6 | 4337 (8.2) | 3673 (8.0) | 664 (9.5) |
| 7 | 4158 (7.9) | 3641 (8.0) | 517 (7.4) |
| 8 | 9654 (18.3) | 9310 (20.4) | 344 (4.9) |
↵* Refers to the cohort of patients who had data for every year of the analysis (i.e., for all 8 years).
↵† Refers to the cohort of patients who did not have data for the entire analysis period (i.e., for all 8 years), owing to loss to follow-up (individuals who died, moved out of the province or were no longer eligible for public health care insurance in Ontario).
Source: Administrative health care data housed at ICES, Toronto.