| 例数 | 优n (%) | 良n (%) | 差n (%) | 优良率(%) | 卡方检验 | |
χ2 | P值 | ||||||
阳性症状组 | 20 | 7 (35) | 10 (50) | 3 (15) | 85% | 3.918 | 0.048 |
阴性症状组 | 104 | 52 (50) | 48 (46.2) | 6 (3.8) | 96.2% |