Prediction model for 770 patients discharged from medical department, Holbæk University Hospital, Denmark, between February and September 2012
| Variables | OR (95% CI) | P value | |
| Social | |||
| Educational level | Higher education | – | |
| Vocational education | 1.09 (0.55 to 2.19) | 0.81 | |
| Primary school | 1.79 (0.94 to 3.38) | 0.08 | |
| Demographic | |||
| Gender | Female | – | |
| Male | 1.71 (1.15 to 2.54) | 0.01 | |
| Organisational | |||
| Contact with emergency service doctor within 1 month before index admission | No | – | |
| Yes | 1.43 (0.99 to 2.09) | 0.06 | |
| Health related | |||
| Primary diagnosis related to the respiratory system | No | – | |
| Yes | 1.57 (0.93 to 2.65) | 0.09 | |
| Primary diagnosis related to atypical symptoms | No | – | |
| Yes | 0.64 (0.39 to 1.03) | 0.07 | |
| Charlson Comorbidity Index score | 0–1 | – | |
| 2–3 | 1.37 (0.87 to 2.16) | 0.18 | |
| 4+ | 1.88 (1.63 to 3.04) | 0.01 | |
| Length of hospital stay | ≤5 days | – | |
| 6+ days | 1.47 (1.01 to 2.15) | 0.05 | |
| Clinical assessment of cognitive problems (not dementia) | No | – | |
| Yes | 2.19 (1.10 to 4.36) | 0.03 | |
| Medication for glaucoma | No | – | |
| Yes | 2.20 (1.02 to 4.78) | 0.05 | |
| Medication for acid disorders | No | – | |
| Yes | 1.89 (1.29 to 2.77) | 0.001 | |
| Medication for thyroid disease | No | – | |
| Yes | 1.83 (0.94 to 3.57) | 0.08 | |
The table shows predictors, ORs and p values for the final prediction model.