pretreatment | 6 months | 12 months | 18 months | 24 months | 36 months | 48 months | 60 months | |
% ≥ 25% (N = 134) | 13 | 47 | 50 | 58 | 59 | 74 | 74 | 88 |
% ≥ 350 N = 149 | 38 | 73 | 79 | 85 | 94 | 86 | 88 | 90 |