| Visit 1 | Visit 2 | Visit 3 | Visit 4 | Visit 5 | Visit 6 |
---|---|---|---|---|---|---|
BARS ≤ 4 (Total), n(%) | 0(0) | 36(43.4) | 40(48.2) | 59(71.1) | 70(84.3) | 77(92.8) |
BARS ≤ 4 (North China), n (%) | 0(0) | 22(40.0) | 25(45.5) | 34(61.8) | 44(80.0) | 50(90.9) |
BARS ≤ 4 (Northeast China), n (%) | 0(0) | 14(50.0) | 15(53.6) | 25(89.3) | 26(92.9) | 27(96.4) |