Stockwell 2015.

Study characteristics
Methods	Cluster Crossover RCT
Participants	Community‐based pediatric clinics affiliated with academic medical center, NY, USA (New York–Presbyterian Hospital/ Columbia University Medical Center) 6593 episodes of care, 4 sites
Interventions	Noninterruptive influenza vaccination reminder using real‐time query of hospital and city immunization information system
Outcomes	Process adherence (documentation, vaccination)
Co‐Interventions	Educational: None Beyond Clinician Education: None
CDSS Features ‐ Acknowledgement of CDSS Required	Yes ‐ required acknowledgement of the CDSS and documentation of action taken
CDSS Features ‐ Other	Considered alert fatigue in design, conveyed patient‐specific information, developed in consultation with users, included supporting information on‐screen, makes care recommendation, possible to execute desired action, 'push' mode of delivery, targeted underuse, user workflow considered in design
Notes
Risk of bias
Bias	Authors' judgement	Support for judgement
Allocation concealment (selection bias)	Unclear risk	N/A
Incomplete outcome data (attrition bias) All outcomes	Low risk
Baseline characteristics similar?	Low risk
Unit of analysis error	Low risk