Table 2. Data-Extraction Template Items.

Demographics and Additional Reporting Items	Quality Intervention (TIDieR parameters)	QI Technique
Author, year, country, surgical speciality, setting Use of patient-reported outcomes Report use of SQUIRE guidelines? Two-year impact factor Five-year impact factor Journal quartile rank Adverse events (unfavorable or unintended effects) Presence and type of patient and public involvement (collaborative or consultative)	Brief name Why: rationale for intervention What: materials used to apply the intervention What: procedures undertaken Who: provided the intervention, including level of training How: the interventions were delivered (e.g., face to face, Internet) Where: location (e.g., emergency or elective, and primary or secondary care) When and how much: duration, dose, intensity Modifications: to intervention over course of study How well (planned): strategies to improve or maintain intervention compliance How well (actual): the extent to which the intervention was delivered as designed	Name of QI technique Baseline measurement Data collection schedule Data analysis (e.g., driver diagrams) Data volume/duration (e.g., length of PDSA cycle) Explicit description of prediction of change Missing data (and reasons given) Description of generalizability Named primary outcome

TIDieR, Template for Interventional Description and Replication; QI, quality improvement; SQUIRE, Standards for QUality Improvement Reporting Excellence; PDSA, Plan-Do-Study-Act.