Table 2 Comparison of AchR Ab cut-off levels associate to outcome at 2 years after diagnosis
Positive | Negative | P | Sen | Spe | PPV | NPV | |
|---|---|---|---|---|---|---|---|
Use 0.2 as cut-off | n (%) | n (%) | % (confident interval) | % (confident interval) | % (confident interval) | % (confident interval) | |
No CSR | 36 (92) | 9 (60) | 0.010* | 80 (65.4–90.4) | 66.7 (29.9–92.5) | 92.3 (82.5–96.8) | 40 (24.0–58.4) |
CSR | 3 (8) | 6 (40) | |||||
Use 0.5 as cut-off | n (%) | n (%) | |||||
No CSR | 28 (93) | 17 (71) | 0.148 | 62 (46.5–76.2) | 66.7 (29.9–92.5) | 90.3 (78.3–96.0) | 26.1 (16.3–39.0) |
CSR | 3 (7) | 6 (29) |