| Comorbidities | Median | |||
| Estimate | Std. Error | 95% Confidence Interval | ||
| Lower Bound | Upper Bound | |||
| Comorbidities | 11.108 | 0.682 | 9.771 | 12.446 |
| No comorbidities | 12.944 | 1.422 | 10.158 | 15.731 |
| Overall | 11.797 | 0.463 | 10.890 | 12.704 |