Site visits in a multicenter ophthalmic clinical trial

Area of Science:

• Ophthalmology
• Clinical Trials
• Quality Control

Background:

• The Early Treatment Diabetic Retinopathy Study (ETDRS) is a large multicenter ophthalmologic clinical trial.
• Ensuring procedural consistency across multiple clinical centers is crucial for the validity of multicenter trial data.

Purpose of the Study:

• To implement and evaluate a quality control program for site visits in the ETDRS.
• To ensure adherence to the ETDRS Manual of Operations across all participating clinical centers.
• To promote comparability and data integrity among the 19 participating clinical centers.

Main Methods:

• Conducted observational site visits to 19 clinical centers involved in the ETDRS.
• Developed presite visit materials including agendas and review forms.
• Focused on monitoring center organization, procedures, and adherence to study protocols.

Main Results:

• Site visits identified and addressed specific challenges faced by individual centers.
• Established effective communication and rapport between site visitors and clinic staff.
• The quality control program contributed to maintaining study enthusiasm and procedural consistency.

Conclusions:

• Site visits are an effective quality control measure for multicenter ophthalmologic trials like ETDRS.
• Consistent application of study procedures across centers is vital for reliable clinical trial outcomes.
• The observational approach and structured preparation facilitated successful site monitoring.