Variable | Unadjusted OR & 95% CI | Adjusted OR & 95% CI† |
Gender | ||
Male | 1.00 | 1.00 |
Female | 0.65 (0.52 to 0.82) | 0.64 (0.50 to 0.81) |
Age groups | ||
0–5 years | 1.00 | 1.00 |
6–15 years | 1.82 (0.74 to 4.45) | 1.88 (0.69 to 5.15) |
16–30 years | 1.23 (0.73 to 2.07) | 1.26 (0.69 to 2.30) |
31–60 years | 0.89 (0.58 to 1.39) | 0.95 (0.56 to 1.60) |
61+ years | 0.79 (0.54 to 1.17) | 0.94 (0.58 to 1.52) |
Age 75+ | ||
0–75 years | 1.00 | 1.00 |
75+ years | 0.65 (0.52 to 0.82) | 0.67 (0.52 to 0.86) |
Chief complaint | ||
Cardio/cerebrovascular | 1.00 | 1.00 |
Respiratory problems | 1.07 (0.74 to 1.54) | 1.14 (0.78 to 1.67) |
Neurological problems | 0.72 (0.47 to 1.11) | 0.67 (0.43 to 1.05) |
Musculoskeletal problems | 0.54 (0.37 to 0.79) | 0.55 (0.35 to 0.86) |
Gastrointestinal problems | 0.80 (0.52 to 1.23) | 1.36 (0.83 to 2.23) |
General medical problems/other medical problems | 0.72 (0.50 to 1.03) | 0.67 (0.45 to 1.00) |
Mental | 1.18 (0.64 to 2.17) | 1.03 (0.52 to 2,07) |
Trauma and injuries | 0.88 (0.40 to 1.93) | 0.86 (0.35 to 2.14) |
Other miscellaneous problems | 0.91 (0.54 to 1.54) | 0.86 (0.41 to 1.82) |
Working day | ||
Monday | 1.00 | 1.00 |
Tuesday | 0.73 (0.43 to 1.23) | 0.65 (0.37 to 1.14) |
Wednesday | 0.82 (0.53 to 1.24) | 0.57 (0.35 to 0.92) |
Thursday | 0.68 (0.45 to 1.05) | 0.50 (0.31 to 0.81) |
Friday | 0.93 (0.54 to 1.24) | 0.76 (0.41 to 1.41) |
Saturday | 1.12 (0.65 to 1.95) | 0.86 (0.47 to 1.56) |
Sunday | 1.10 (0.66 to 1.84) | 0.85 (0.49 to 149) |
Ambulance dispatch priority group | ||
Community-based services | 1.00 | 1.00 |
Green | 4.92 (2.46 to 9.81) | 5.34 (2.57 to 11.09) |
Red | 6.22 (3.12 to 12.38) | 6.32 (3.03 to 11.17) |
Source of call | ||
Community-based services | 1.00 | 1.00 |
General public | 5.56 (2.82 to 10.98) | 5.49 (2.64 to 11.40) |
Type of GP input | ||
Face-to-face assessment | 1.00 | 1.00 |
Telephone advice | 2.30 (1.85 to 2.88) | 2.14 (1.68 to 2.72) |
‡Adjusted OR from standard logistic regression models. Multiple adjustment of all variables listed above.
GP, general practitioner.