Table 2 Agreement in response status (complete or partial) across visits
% Response at both visits | % Non-response at both visits | % Discordant response status | Kappa (95% CI) for agreement in response status across visits | |
|---|---|---|---|---|
Week 12 and week 26 | 20.8% | 51.5% | 27.7% | 0.41 (0.27, 0.56) |
Week 12 and week 52 | 16.5% | 40.9% | 42.5% | 0.16 (0.015, 0.30) |
Week 26 and week 52 | 33.8% | 33.8% | 32.4% | 0.36 (0.21, 0.51) |