Weighting algorithm used to score the Rx-Risk Index*
| Odds Ratio (OR) | P values | Weighted Rx-Risk Score |
| Any OR | >0.10 | 0 |
| <1 | ≤0.10 | −1 |
| 1.0≤ and <1.2 | ≤0.10 | 1 |
| 1.2≤ and <1.4 | ≤0.10 | 2 |
| 1.4≤ and <1.6 | ≤0.10 | 3 |
| 1.6≤ and <1.8 | ≤0.10 | 4 |
| 1.8≤ and <2.0 | ≤0.10 | 5 |
| ≥2.0 | ≤0.10 | 6 |
*Weights are based on the size of OR quantifying the probability of mortality in an outpatient population within 1 year, given treatment for a specified comorbidity.