Multivariate generalised linear modelling: influence of disease severity, hospitalisation, and diagnosis on total six month resource use for a cohort of inflammatory bowel disease patients
| Variable | Coefficient (SE) | Relative increase in costs associated with variable (baseline = 1) | p Value |
|---|---|---|---|
| †Increase when ulcerative colitis or indeterminate colitis compared to Crohn’s disease (that is, baseline category: Crohn’s disease). | |||
| ‡Baseline category: remission. | |||
| Diagnosis† | 0.17 (0.07) | 1.18 (1.03,1.35) | 0.014 |
| Hospitalisation | 2.04 (0.12) | 7.65 (6.11,9.60) | <0.001 |
| Disease severity‡ | <0.001 | ||
| Mild disease | 1.03 (0.11) | 2.80 (2.26,3.47) | |
| Severe disease, drug responsive | 1.25 (0.14) | 3.47 (2.66,4.54) | |
| Severe disease, drug dependent | 1.64 (0.13) | 5.13 (3.99,6.60) | |
| Severe disease, drug refractory | 1.63 (0.16) | 5.09 (3.71,7.00) | |
| Surgery | 2.23 (0.21) | 9.32 (6.20,13.99) | |
| Post surgical remission | 0.13 (0.16) | 1.14 (0.83,1.57) | |
| Constant | 5.05 (0.11) | <0.001 | |