Eligibility criteria
| Inclusion criteria | |
| Population | Paediatric patients (<18 years old) who underwent a neurosurgical procedure |
| Exposure | Type of neurosurgical procedure Number (or percentage) of patients readmitted with their characteristics Risk factors for readmission (ideally, factors that are known while patient is admitted) |
| Comparisons | None |
| Outcome of Interest | Readmission or reoperation within 30 days and 90 days after index neurosurgical procedure |
| Timing | Including all studies up to the present |
| Setting | Single and multicentre studies; hospital admissions Worldwide |
| Study designs | Expected to include observational studies but controlled trials may only be included if the intervention being studied is the index neurosurgical procedure. In this case, only data from the group which has undergone a neurosurgical procedure will be included. |
| Exclusion criteria | |
| Studies reporting planned readmission or reoperation such as second-look surgery Studies that reported readmission as a part of a composite outcome or an index Studies where the full text is not available despite extensive efforts in procuring Qualitative studies, case reports, case studies, case series, and commentaries | |