Data Collection

The level of evidence of the studies was assigned according to the classification as specified by Wright et al.²⁶ The information was collected from the included studies. Patient demographics, follow-up, and objective and subjective outcomes were extracted and recorded. For continuous variables (eg, age, timing, follow-up, outcome scores), the mean and range were collected if reported. Data were recorded into a custom Microsoft Excel spreadsheet by use of a modified information extraction table.