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Table 2 Covariate analysis in a Cox-proportional hazard model. Univariate analysis was performed for each covariate

From: Comprehensive pharmaceutical care to prevent drug-related readmissions of dependent-living elderly patients: a randomized controlled trial

Covariate Effect risk factor on DRR Effect treatment group on DRR
HRRF [CI] P value HRTG [CI] P value
Age [years] 0.86 [0.76–0.97] 0.014* 4.62 [1.18–18.13] 0.028*
Gender 0.81 [0.23–2.79] 0.732 3.26 [0.84–12.66] 0.088
Living situation 1.01 [0.21–4.94] 0.989 3.28 [0.82–13.09] 0.092
Length of stay on ward [d] 1.10 [1.01–1.19] 0.020* 5.76 [1.15–28.85] 0.033*
Number of PIM drugs 0.98 [0.34–2.80] 0.966 3.26 [0.83–12.81] 0.090
Number of changes in medication after discharge 1.06 [1.01–1.11] 0.013* 2.51 [0.62–10.17] 0.196
Number of drugs (during stay on the ward) 1.04 [0.95–1.14] 0.387 3.54 [0.90–13.89] 0.070
  1. The hazard ratio (HR) describes the influence of the risk factor on the risk for DRR (“effect risk factor”) or the risk for a DRR in the control group compared to the intervention group (“effect treatment group”)
  2. RF risk factor, TG treatment group, CI confidence interval, PIM potentially inadequate medication
  3. *P < 0.05