Multilevel logistic regression model results for the drugs prescribed to older patients at discharge home that had significant predictive values (OR) for 30-day hospital readmission (controlled for variables in the baseline model: table 4) (N=13 802)
| Variables | OR* | P value >z | 95% CI |
| First level, anatomical main group | |||
| Blood and blood-forming organs drugs (B) | 1.089 | 0.041 | 1.003 to 1.181 |
| Systemic hormonal preparations, excluding sex hormones and insulins (H) | 1.207 | 0.007 | 1.052 to 1.385 |
| Respiratory system drugs (R) | 1.146 | 0.003 | 1.046 to 1.254 |
| Second level, therapeutic subgroup | |||
| Drugs for functional gastrointestinal disorders (A03) | 1.424 | 0.001 | 1.166 to 1.739 |
| Antiemetics and antinauseants (A04) | 3.216 | 0.000 | 1.842 to 5.617 |
| Drugs for constipation (A06) | 1.195 | 0.018 | 1.031 to 1.386 |
| Drugs used in diabetes (A10) | 1.125 | 0.021 | 1.018 to 1.243 |
| Vitamins (A11) | 1.201 | 0.008 | 1.049 to 1.374 |
| Antihypertensives (C02) | 1.771 | 0.000 | 1.287 to 2.438 |
| Diuretics (C03) | 1.149 | 0.024 | 1.018 to 1.296 |
| Beta-blocking agents (C07) | 1.156 | 0.040 | 1.007 to 1.327 |
| Lipid-modifying agents (C10) | 0.841 | 0.015 | 0.732 to 0.967 |
| Psycholeptics (N05) | 1.130 | 0.009 | 1.031 to 1.238 |
*Adjusted OR.