Presenting condition | Control group | Lookup group | Risk ratio | 95% CI | ||||||
Frequency | Percentage | Median | Frequency | Percentage | Median | |||||
Age | Triage category | Age | Triage category | |||||||
Confusion | 40 | 0.23 | 68.5 | 3 | 68 | 0.83 | 78.5 | 3 | 3.62 | 2.45 to 5.35 |
Collapse/fall | 490 | 2.81 | 66.0 | 3 | 658 | 8.04 | 79.0 | 3 | 2.86 | 2.55 to 3.21 |
Cardiac arrest | 13 | 0.07 | 55.0 | 1 | 17 | 0.21 | 59.0 | 1 | 2.79 | 1.35 to 5.74 |
Seizure postictal | 115 | 0.66 | 22.0 | 3 | 141 | 1.72 | 44.0 | 3 | 2.62 | 2.05 to 3.34 |
Medical other | 1203 | 6.89 | 58.0 | 3 | 1 269 | 15.51 | 70.0 | 3 | 2.25 | 2.09 to 2.42 |
Palpitations | 189 | 1.08 | 59.0 | 3 | 191 | 2.33 | 69.0 | 3 | 2.15 | 1.77 to 2.63 |
Chest pain | 1042 | 5.97 | 58.0 | 3 | 966 | 11.80 | 68.0 | 2 | 1.98 | 1.82 to 2.15 |
Gastrointestinal bleed | 86 | 0.49 | 63.5 | 3 | 79 | 0.97 | 73.0 | 3 | 1.96 | 1.44 to 2.66 |
Not coping socially | 22 | 0.13 | 43.0 | 4 | 19 | 0.23 | 62.0 | 4 | 1.84 | 1.0 to 3.40 |
Breathing/asthma | 978 | 5.60 | 26.0 | 3 | 801 | 9.79 | 68.0 | 3 | 1.75 | 1.60 to 1.91 |
Bowel obstruction | 18 | 0.10 | 65.0 | 3 | 14 | 0.17 | 72.5 | 3 | 1.66 | 0.83 to 3.33 |
Headache/vertigo/dizziness | 419 | 2.40 | 45.0 | 3 | 277 | 3.38 | 63.0 | 3 | 1.41 | 1.21 to 1.64 |
Urology other | 300 | 1.72 | 43.0 | 3 | 191 | 2.33 | 68.0 | 3 | 1.36 | 1.13 to 1.62 |
Suspected DVT | 51 | 0.29 | 60.0 | 4 | 25 | 0.31 | 68.0 | 4 | 1.05 | 0.65 to 1.69 |
Overdose/poison/intoxication | 285 | 1.63 | 21.0 | 3 | 135 | 1.65 | 34.0 | 2 | 1.01 | 0.82 to 1.24 |
Nausea/vomiting/diarrhoea | 458 | 2.62 | 23.5 | 4 | 211 | 2.58 | 69.0 | 3 | 0.98 | 0.84 to 1.15 |
Febrile illness | 476 | 2.73 | 4.0 | 3 | 210 | 2.57 | 65.0 | 2 | 0.94 | 0.80 to 1.10 |
Abdominal pain | 1600 | 9.17 | 35.0 | 3 | 718 | 8.77 | 58.5 | 3 | 0.96 | 0.88 to 1.04 |
Injury trunk | 515 | 2.95 | 39.0 | 4 | 207 | 2.53 | 61.0 | 4 | 0.86 | 0.73 to 1.00 |
Orthopaedic other | 260 | 1.49 | 48.0 | 4 | 104 | 1.27 | 59.5 | 4 | 0.86 | 0.68 to 1.07 |
Depression/other psychological | 109 | 0.62 | 24.0 | 4 | 39 | 0.48 | 37.0 | 3 | 0.76 | 0.53 to 1.10 |
Influenza type symptoms | 99 | 0.57 | 29.0 | 4 | 34 | 0.42 | 49.0 | 4 | 0.73 | 0.50 to 1.08 |
Rash/cellulitis | 770 | 4.41 | 26.0 | 4 | 255 | 3.12 | 54.0 | 4 | 0.71 | 0.61 to 0.81 |
Major trauma | 266 | 1.52 | 33.0 | 2 | 83 | 1.01 | 56.0 | 2 | 0.67 | 0.52 to 0.85 |
Surgical other | 239 | 1.37 | 48.0 | 4 | 73 | 0.89 | 65.0 | 4 | 0.65 | 0.50 to 0.85 |
Ear, nose and throat | 537 | 3.08 | 23.0 | 4 | 143 | 1.75 | 55.0 | 3 | 0.57 | 0.47 to 0.68 |
Injury lower limb | 1600 | 9.17 | 30.0 | 4 | 383 | 4.68 | 67.0 | 4 | 0.51 | 0.46 to 0.57 |
Injury head | 830 | 4.76 | 19.0 | 4 | 198 | 2.42 | 63.5 | 4 | 0.51 | 0.44 to 0.59 |
Multiple injuries | 319 | 1.83 | 31.0 | 3 | 76 | 0.93 | 68.5 | 3 | 0.51 | 0.40 to 0.65 |
Obstetrics/gynaecology other | 219 | 1.26 | 29.0 | 4 | 44 | 0.54 | 40.0 | 3 | 0.43 | 0.31 to 0.59 |
Eye problem | 267 | 1.53 | 38.0 | 4 | 47 | 0.57 | 56.0 | 4 | 0.38 | 0.28 to 0.51 |
Injury upper limb | 1948 | 11.16 | 23.0 | 4 | 342 | 4.18 | 51.0 | 4 | 0.37 | 0.33 to 0.42 |
Ophthalmology | 58 | 0.33 | 28.0 | 4 | 10 | 0.12 | 53.5 | 4 | 0.37 | 0.19 to 0.72 |
Maxillofacial | 101 | 0.58 | 25.0 | 4 | 12 | 0.15 | 66.0 | 4 | 0.25 | 0.14 to 0.46 |
Dental problem | 273 | 1.56 | 29.0 | 4 | 26 | 0.32 | 42.0 | 4 | 0.20 | 0.14 to 0.30 |
Paediatric other | 941 | 5.39 | 0.0 | 4 | 59 | 0.72 | 3.0 | 3 | 0.13 | 0.10 to 0.17 |
Early pregnancy problem | 143 | 0.82 | 30.0 | 4 | 8 | 0.10 | 26.5 | 3 | 0.12 | 0.06 to 0.24 |
DVT, deep vein thrombosis.