Readmission time interval |
Wide variation from 7 days to 60 months
Most prevalent were 1 and 12 months, reported by 32.8% and 43.3% of the included articles, respectively
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Unnecessary readmission definition |
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Case-mix adjustment approach |
73.1% of the articles did not specify risk adjustments that were made
Most prevalently adjusted variables were clinical (including diagnosis; 17.9%), service use (19.4%) and sociodemographic (20.9%)
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Study setting |
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Target population |
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Sample size and comparisons conducted |
Wide variation among studies reporting (23–60 254 participants)
40.3% and 29.9% of the articles reported on studies examining comparisons to usual care and having no comparisons, respectively
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Voluntariness of readmissions |
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Care transition processes |
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65.7% and 35.8% of the articles were on care transition processes involving outpatient follow-up and patient education, respectively
(these and other process categories are defined in the main text)
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