Potential predictor variables associated with the number of discrepancies (clinically relevant and not) in bivariate and multivariable Poisson regressions
| Variable | Bivariate Poisson regression | Multivariable Poisson regression | ||||
| IRR | 95% CI | P value | IRR | 95% CI | P value | |
| Age (per year) | 1.01 | 1.00 to 1.01 | 0.170 | 1.00 | 0.99 to 1.01 | 0.980 |
| Gender (female as reference) Male | 0.96 | 0.76 to 1.22 | 0.732 | 0.90 | 0.74 to 1.10 | 0.301 |
| Type of admission (emergency admission as reference) Planned admission | 1.12 | 0.77 to 1.64 | 0.550 | 1.03 | 0.76 to 1.39 | 0.860 |
| Residence (home as reference) Non-home residence | 0.77 | 0.55 to 1.08 | 0.128 | 0.54 | 0.37 to 0.79 | 0.002 |
| Management of home therapy (autonomous as reference) Assisted management | 1.07 | 0.84 to 1.36 | 0.578 | 0.83 | 0.65 to 1.05 | 0.120 |
| Moment of admission (weekday as reference) Admission during weekend and holydays | 1.08 | 0.86 to 1.36 | 0.517 | 1.10 | 0.91 to 1.32 | 0.317 |
| Number of drugs used (per drug) | 1.06 | 1.04 to 1.07 | <0.001 | 1.08 | 1.06 to 1.10 | <0.001 |
IRR, incidence rate ratio.