Table 3.
Multivariate logistic regression model predicting 30 + ALC days for mental health inpatients in Ontario, WTIS 2011–2013 (N = 74,732)
| Variable | Group level | Parameter estimate (SE) | OR (95% CI) | χ2 p value |
|---|---|---|---|---|
| Age group | 18–44 (ref) | – | – | – |
| 45–64 | 0.68 (0.12) | 2.01 (1.62–2.49) | < 0.0001 | |
| 65+ | 1.03 (0.13) | 2.89 (2.24–3.73) | < 0.0001 | |
| Gender | Female (ref) | – | – | – |
| Male | 0.36 (0.07) | 1.42 (1.23–1.65) | < 0.0001 | |
| Primary language | English/French (ref) | – | – | – |
| Other | 0.34 (0.12) | 1.40 (1.11–1.78) | 0.006 | |
| Marital status | Unmarried (ref) | – | – | – |
| Married | − 0.33 (0.09) | 0.71 (0.59–0.85) | 0.0002 | |
| Insight into mental health | Full (ref) | – | – | – |
| Limited | 0.64 (0.18) | 1.89 (1.34–2.67) | 0.0003 | |
| None | 0.65 (0.18) | 1.92 (1.34–2.76) | 0.0004 | |
| Lifetime admissions to a psychiatric hospital | 0 (ref) | – | – | – |
| 1–3 | 0.16 (0.09) | 1.18 (0.98–1.41) | 0.08 | |
| 4–5 | 0.30 (0.13) | 1.35 (1.06–1.73) | 0.02 | |
| 6+ | 0.47 (0.11) | 1.60 (1.29–2.00) | < 0.0001 | |
| Visit from a social relation | < 3 days (ref) | – | – | – |
| < 7 days | 0.11 (0.10) | 1.12 (0.92–1.36) | 0.3 | |
| < 30 days | 0.21 (0.12) | 1.24 (0.98–1.56) | 0.07 | |
| 30 + days | 0.50 (0.10) | 1.66 (1.36–2.01) | < 0.0001 | |
| Disorder of childhood/adolescence | No (ref) | – | – | – |
| Yes | 0.85 (0.18) | 2.38 (1.69–3.36) | < 0.0001 | |
| Delirium, dementia and amnestic and other cognitive disorders | No (ref) | – | – | – |
| Yes | 1.14 (0.11) | 3.11 (2.53–3.83) | < 0.0001 | |
| Mood disorders | No (ref) | – | – | – |
| Yes | − 0.41 (0.09) | 0.66 (0.56–0.79) | < 0.0001 | |
| Intellectual disability | No (ref) | – | – | – |
| Yes | 0.49 (0.12) | 1.65 (1.30–2.10) | < 0.0001 | |
| Social withdrawal scale (SWS) | 0 (ref) | – | – | – |
| 1–2 | − 0.02 | 0.98 (0.81–1.17) | 0.7 | |
| 3–6 | − 0.19 | 0.83 (0.69–1.00) | 0.05 | |
| Positive Symptoms Scale – Long (PSSL) | 0 (ref) | – | – | – |
| 1–3 | − 0.07 (0.10) | 0.93 (0.77–1.13) | 0.5 | |
| 4–8 | − 0.07 (0.10) | 0.93 (0.77–1.13) | 0.5 | |
| 9–24 | − 0.39 (0.12) | 0.69 (0.54–0.87) | 0.002 | |
| Cognitive Performance Scale (CPS) | 0 (ref) | – | – | – |
| 1–2 | 0.51 (0.12) | 1.61 (1.29–2.02) | < 0.0001 | |
| 3–6 | 0.69 (0.14) | 1.90 (1.45–2.48) | < 0.0001 | |
| Instrumental Activities of Daily Living scale (IADL) | 0 (ref) | – | – | – |
| 1–3 | 0.35 (0.18) | 1.41 (0.98–1.94) | 0.07 | |
| 4–9 | 0.93 (0.15) | 2.35 (1.76–3.14) | < 0.0001 | |
| 10–18 | 1.29 (0.15) | 3.21 (2.40–4.30) | < 0.0001 | |
| 19–30 | 1.45 (0.16) | 3.81 (2.79–5.21) | < 0.0001 | |
| Activities of Daily Living scale (ADL) | 0 (ref) | – | – | – |
| 1–16 | 0.44 (0.10) | 1.55 (1.28–1.87) | < 0.0001 | |
| Depressive Severity Index (DSI) | 0 (ref) | – | – | – |
| 1–3 | − 0.14 (0.08) | 0.87 (0.74–1.02) | 0.09 | |
| 4–7 | − 0.34 (0.11) | 0.72 (0.58–0.89) | 0.002 | |
| 8–15 | − 0.57 (0.17) | 0.57 (0.41–0.78) | 0.0008 | |
| Aggressive Behaviour Scale (ABS) | 0 (ref) | – | – | – |
| 1–12 | 0.16 (0.08) | 1.17 (1.00–1.38) | 0.05 | |
| Substance use CAP | Not triggered (ref) | – | – | – |
| Triggered for past use | 0.48 (0.15) | 1.62 (1.22–2.15) | 0.0008 | |
| Triggered for current use | − 0.39 (0.11) | 0.68 (0.54–0.85) | 0.0006 | |
| Support systems for discharge (SSDIS) CAP | Not triggered (ref) | – | – | – |
| Triggered | 0.43 (0.07) | 1.53 (1.33–1.77) | < 0.0001 |
SE standard error, OR odds ratio, CI confidence interval, ref reference group
0.91