组别 | 例数 | GBS&VVC | GBS&BV | VVC&BV | GBS&VVC&BV |
研究组 | 283 | 10(3.54) | 12(4.24) | 9(3.18) | 3(1.06) |
对照组 | 302 | 1(0.33) | 1(0.33) | 1(0.33) | 0(0.00) |
X2 | - | 8.121 | 10.275 | 5.464 | 1.476 |
P | - | 0.004 | 0.001 | 0.019 | 0.224 |