Canada | USA | Australia | UK | |
---|---|---|---|---|
Number recruited | 2507 | 2500 | 2730 | 2566 |
Cooperation rate at recruitment | 82.3% | 83.2% | 78.7% | 78.8% |
Wave 1 retention from recruitment | 88.3% | 85.5% | 87.9% | 89.8% |
Wave 2 retention from Wave 1 | 75.8% | 62.8% | 77.7% | 81.4% |
Number of cohort participating in Waves 1 and 2 | 1679 | 1342 | 1876 | 1865 |