Lo 2009.

Study characteristics
Methods	Cluster RCT
Participants	Primary care practices affiliated with two academic medical centers, USA (Partners HealthCare System) 2765 patients, 366 providers, 22 practices
Interventions	Non‐interruptive, real‐time CDSS recommending baseline lab testing when prescribing medications to patients lacking baseline labs
Outcomes	Process adherence (testing)
Co‐Interventions	Educational: None Beyond Clinician Education: None
CDSS Features ‐ Acknowledgement of CDSS Required	No
CDSS Features ‐ Other	Considered alert fatigue in design, conveyed patient‐specific information, developed by study investigators, makes care recommendation, other concurrent CDSS, '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	N/A
Incomplete outcome data (attrition bias) All outcomes	Low risk
Baseline characteristics similar?	Low risk
Unit of analysis error	Low risk