Comparison 2. Effect of discharge planning on unscheduled read-mission rates compared to usual care.Seven trials measured re admission to hospital,results were reported as rates of readmission to hospital or days spent in hospital as a result of readmission. We pooled readmission data for the tri-als recruiting elderly patients with a medical condition reporting readmission rates at up to 3 months of discharge from hospital [Kennedy; Moher; Naylor; Shaw; Nazareth]. We failed to detect a difference between those allocated to discharge planning and those in the control group (OR 0.91, 95% CI 0.67 to 1.23). One trial not included in the pooled analysis presented readmission datain a number of different ways [Weinberger]. Although a statisti-cally significant increase in mean monthly readmission rate was observed at six months follow-up for patients receiving discharge planning(intervention group=0.19(sd+0.4)control group=0.14 (sd+0.2) p=0.005), and for the meannumber of readmissiondays (intervention 10.2 (19.8), control 8.8 (19.7) p<0.04), no statisti-cally significant difference was detected at 6 months follow-up for the proportions of patients readmitted to hospital (intervention = 49% control = 44% p = 0.06) [Weinberger]. One trial reported a significant reduction in readmission days for patients allocated to discharge planning (mean difference -33 days at 2 to 6 weeks follow-up, 95% CI -53 to -13) [Naylor]; however, this difference was not detected at longer term follow-up. These findings were not replicated in another trial measuring readmission days at 1 year follow-up (difference +2 days, p >0.05 [Hendriksen].
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