Zera 2015.

Study characteristics
Methods	Cluster RCT
Participants	Primary care clinics affiliated with regional academic medical network, USA (Partners HealthCare System) 847 patients, 26 physician clusters
Interventions	Identified women with a history of gestational diabetes and recommended screening for type 2 diabetes
Outcomes	Process adherence (testing), Clinical endpoint (diabetes diagnosis)
Co‐Interventions	Educational: None Beyond Clinician Education: None
CDSS Features ‐ Acknowledgement of CDSS Required	Not reported
CDSS Features ‐ Other	Ambush, conveyed patient‐specific information, decision support was complex, developed by study investigators, included supporting information on‐screen, makes care recommendation, other concurrent CDSS, 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)	Low risk
Incomplete outcome data (attrition bias) All outcomes	Low risk
Baseline characteristics similar?	Low risk
Unit of analysis error	Low risk

CPOE: Computerized provider order entry; EMR: electronic medical record; RCT: randomised controlled trial; CCT: Controlled clinical trial; *: Some of the outcomes within this category are continuous (as opposed to dichotomous); **: All of the outcomes within this category are continuous (as opposed to dichotomous).