Table 2 Stored samples mandated by the protocol and received at the central laboratory for testing
From: Assessing site performance in the Altair study, a multinational clinical trial
Region | Buffy coat samples | Plasma samples | |||
|---|---|---|---|---|---|
Protocol- mandated buffy coat samples to be collected | Actual buffy coat samples collected | Protocol- mandated plasma samples to be collected | Actual plasma samples collected | Proportion of visits where plasma samples were not collected as required (%) | |
Asia | 203 | 224 | 4,545 | 3,582 | 0 |
Australia | 66 | 118 | 1,485 | 1,314 | 5 |
Europe | 130 | 199 | 2,880 | 2,293 | 7 |
Latin America | 196 | 317 | 4,365 | 3,607 | 5 |
North America | 20 | 25 | 450 | 444 | 1 |