Introduction
Background
Methods
Study design
Telephone triage system in Tokyo, Japan
AHHC medical service
Study participants
Data source
Statistical analyses
Results
Proportion of undertriage
Comparing patient characteristics between the appropriately triaged and undertriaged groups
Appropriate triageN = 10,479 | UndertriageN = 263 | p value | |
---|---|---|---|
Age, years | |||
Median (IQR) | 21 (4–37) | 46 (26–78) | < 0.001 |
Category, n (%) | < 0.001 | ||
0–15 | 4960 (47.3) | 48 (18.3) | |
16–64 | 4925 (46.9) | 122 (45.3) | |
65–74 | 198 (1.9) | 21 (7.6) | |
≥ 75 | 412 (3.9) | 83 (28.9) | |
Male sex, n (%) | 5514 (52.5) | 144 (54.8) | 0.47 |
Comorbidities, n (%) | |||
Hypertension | 219 (2.1) | 22 (8.4) | < 0.001 |
Diabetes mellitus | 85 (0.8) | 15 (5.7) | < 0.001 |
Hyperlipidemia | 64 (0.6) | 5 (1.9) | 0.03 |
Gout | 19 (0.2) | 3 (1.1) | 0.02 |
Chronic lung disease | 395 (3.8) | 9 (3.4) | 0.77 |
Myocardial infarction | 14 (0.1) | 2 (0.8) | 0.06 |
Heart failure | 13 (0.1) | 3 (1.1) | < 0.001 |
Liver disease | 23 (0.2) | 2 (0.8) | 0.12 |
Cerebral infarction | 49 (0.5) | 13 (4.9) | < 0.001 |
Cancer | 141 (1.3) | 16 (6.1) | < 0.001 |
Dementia | 28 (0.3) | 10 (3.8) | < 0.001 |
Associated factors for undertriage
Variable | Adjusted OR | 95% CI | p value |
---|---|---|---|
Age category, n (%) | |||
0–15 | 1 (reference) | ||
16–64 | 2.40 | 1.71–3.36 | < 0.001 |
65–74 | 8.57 | 4.83–15.2 | < 0.001 |
≥ 75 | 14.9 | 9.65–23.01 | < 0.001 |
Sex | |||
Male | 1 (reference) | ||
Female | 0.90 | 0.70–1.17 | 0.43 |
Comorbidities | |||
Hypertension | 0.94 | 0.56–1.59 | 0.82 |
Diabetes mellitus | 2.31 | 1.25–4.26 | 0.008 |
Hyperlipidemia | 0.87 | 0.32–2.35 | 0.78 |
Gout | 3.55 | 0.97–13.0 | 0.056 |
Chronic lung disease | 1.02 | 0.51–2.03 | 0.96 |
Myocardial infarction | 1.32 | 0.28–6.35 | 0.73 |
Heart failure | 1.14 | 0.30–4.28 | 0.85 |
Liver disease | 1.81 | 0.40–8.26 | 0.45 |
Cerebral infarction | 1.98 | 1.01–3.87 | 0.046 |
Cancer | 1.20 | 0.67–2.15 | 0.54 |
Dementia | 2.32 | 1.05–5.10 | 0.04 |