Table 1
Demographic and clinical characteristics (n unless otherwise specified).
| CHARACTERISTICS | ARIA | NON-ARIA (CONTROL) | P-VALUE |
|---|---|---|---|
| Age (median) | 85.6 years | 84.5 years | 0.1 |
| Female sex | 91:94 | 77:108 | 0.1 |
| CALD | 107 | 120 | 0.2 |
| Non-English-Speaking | 70 | 74 | 0.7 |
| Residence (Community:RACF) | 158:27 | 146:39 | 0.1 |
| CSHA Frailty scale | 0.2 | ||
| Category 1 | 0 | 1 | |
| Category 2 | 0 | 1 | |
| Category 3 | 0 | 3 | |
| Category 4 | 9 | 14 | |
| Category 5 | 60 | 68 | |
| Category 6 | 84 | 65 | |
| Category 7 | 31 | 33 | |
| CCI (median [IQR]) | 6 (5–7) | 6 (5-8) | 0.2 |
| Dementia | 60 | 63 | 0.8 |
| Delirium | 50 | 73 | 0.008 |
| Active BPSD | 6 | 13 | 0.1 |
| Triage Category | 0.003 | ||
| Category 1 | 1 (0.5%) | 1 (0.5%) | |
| Category 2 | 28 (15.2%) | 46 (24.9%) | |
| Category 3 | 151 (82.0 %) | 123 (66.5 %) | |
| Category 4 | 3(1.6%) | 15 (8.1%) | |
| Category 5 | 1 (0.5%) | 0 (0.0%) | |
| High Triage Category (1+2) | 29 (15.7%) | 47 (25.4%) | 0.02 |
Figure 1
Boxplot of LOS according to ARIA versus non-ARIA (unadjusted).
Table 2
Analysis of factors potentially associated with hospital length of stay. CSHA = Canadian Study of Health & Aging. CCI = Charlson Comorbidity Index.
| UNIVARIATE ANALYSIS | |||
|---|---|---|---|
| VARIABLE | ODDS RATIO | 95% CI | P-VALUE |
| ARIA | 0.1 | 0.1–0.3 | <0.0001 |
| Age | 0.9 | 0.9–1.0* | <0.001 |
| Female Sex | 1.0 | 0.6–1.6 | 0.9 |
| Dementia | 1.2 | 0.7–2.1 | 0.5 |
| Delirium | 1.0 | 0.6–1.7 | 1.0 |
| CSHA Frailty | 0.9 | 0.7–1.2 | 0.6 |
| CCI score | 0.8 | 0.7–0. | <0.003 |
| Community Domicile | 4.7 | 1.6–13.4 | <0.004 |
| High Triage Category | 0.7 | 0.4–1.4 | 0.34 |
| MULTIVARIATE ANALYSIS | |||
| VARIABLE | ODDS RATIO | 95% CI | P-VALUE |
| ARIA | 0.1 | 0.04–0.2 | <0.0001 |
| Age | 1.0 | 0.9–1.0* | <0.02 |
| CCI score | 0.9 | 0.8–1.0 | 0.1 |
| Community Domicile | 6.1 | 2.1–18.2 | <0.001 |
[i] * Discrepancy between confidence interval and p-value occurs due to rounding up to one decimal place.
Table 3
Multivariate analysis of factors potentially associated with emergency department length of stay.
| VARIABLE | ODDS RATIO | 95% CI | P-VALUE |
|---|---|---|---|
| ARIA | 1.1 | 0.6–1.7 | 0.9 |
| Age | 1.0 | 0.9–1.0* | <0.02 |
| Dementia | 0.7 | 0.4–1.2 | 0.2 |
| Delirium | 0.5 | 0.3–0.9 | <0.02 |
| Community Domicile | 1.9 | 0.9–4.2 | 0.1 |
[i] * Discrepancy between confidence interval and p-value occurs due to rounding up to one decimal place.