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Table 2 Examples of performance metrics within each identified category

From: Monitoring performance of sites within multicentre randomised trials: a systematic review of performance metrics

Categories

Example performance metric

Studies in which metric included

Assessing site potential

Site location potential index based on an assessment of the number of patients at an individual site with the disease of interest

[14]

Monitoring recruitment

Number of participants randomised per site

[15, 17, 27]

Monitoring retention

Rates of withdrawal by site

[20, 25]

Quality of data collection

Number of data queries per participant

[2, 12, 19]

Trial conduct

Protocol violations per site or per participant

[12, 15, 23, 27, 30]

Trial safety

Serious adverse event (SAE) reporting per site

[11, 24, 27]