| Outcome variables without interaction terms |
a) Travel time to GP | 0.98 (0.84 to 1.14) | 0.91 (0.75 to 1.09) | 0.91 (0.78 to 1.07) | 0.81a (0.72 to 0.92) |
b) Rural | 1.08 (0.80 to 1.46) | 0.83 (0.58 to 1.18) | 0.99 (0.72 to 1.34) | 0.71a (0.57 to 0.88) |
c) Alarm symptoms | N/A | 0.36b (0.25 to 0.53) | 0.85 (0.64 to 1.14) | 1.15 (0.94 to 1.41) |
|
| Outcome variables with interaction terms fitted |
d) Travel time to GP | 1.34 (0.98 to 1.82) | 0.62b (0.39 to 0.97) | 0.94 (0.68 to 1.29) | 0.75b (0.59 to 0.96) |
Rural | 1.62b (1.05 to 2.48) | 0.61 (0.36 to 1.02) | 1.11 (0.72 to 1.70) | 0.69b (0.51 to 0.94) |
Travel time/rurality interaction | 0.62b (0.43 to 0.90) | 1.69b (1.02 to 2.79) | 0.95 (0.65 to 1.38) | 1.18 (0.88 to 1.57) |
Alarm symptoms | N/A | 0.37a (0.26 to 0.54) | 0.84 (0.63 to 1.12) | 1.17 (0.95 to 1.43) |
Age, years | 1.00 (0.98 to 1.01) | 1.02b (1.00 to 1.03) | 0.97a (0.96 to 0.99) | 1.03a (1.02 to 1.04) |
Female | 0.95 (0.72 to 1.23) | 0.89 (0.63 to 1.24) | 0.76 (0.57 to 1.01) | 0.74a (0.60 to 0.90) |
Index of deprivation (Carstairs) | 0.99 (0.94 to 1.04) | 0.99 (0.93 to 1.05) | 1.05 (0.99 to 1.11) | 1.02 (0.99 to 1.06) |
0 comorbidities (Charlson score) (reference) | 1 | 1 | 1 | 1 |
1–2 comorbidities (Charlson) | 0.53a (0.39 to 0.71) | 4.87a (3.27 to 7.26) | 0.87 (0.63 to 1.19) | 1.20 (0.95 to 1.50) |
>3 comorbidities (Charlson) | 0.29a (0.20 to 0.44) | 7.26a (4.63 to 11.39) | 1.44 (0.97 to 2.14) | 2.53a (1.98 to 3.25) |