Groups | Improved hearing | Chi-square | ||||||
---|---|---|---|---|---|---|---|---|
Yes | No | Total | ||||||
N | % | N | % | N | % | χ2 | P value | |
I | 41 | 91.11 | 4 | 8.89 | 45 | 26.47 | 29.889 | < 0.001* |
II | 32 | 72.73 | 12 | 27.27 | 44 | 25.88 | ||
III | 21 | 50.00 | 21 | 50.00 | 42 | 24.71 | ||
IV | 37 | 94.87 | 2 | 5.13 | 39 | 22.94 | ||
Total | 131 | 77.06 | 39 | 22.94 | 170 | 100.00 | ||
I + IV | 78 | 92.86 | 6 | 7.14 | 84 | 49.41 | 21.710 | < 0.001* |
II + III | 53 | 61.63 | 33 | 38.37 | 86 | 50.59 | ||
Total | 131 | 77.06 | 39 | 22.94 | 170 | 100.00 | ||
I + II | 73 | 82.02 | 16 | 17.98 | 89 | 52.35 | 2.047 | 0.152 |
III + IV | 58 | 71.60 | 23 | 28.40 | 81 | 47.65 | ||
Total | 131 | 77.06 | 39 | 22.94 | 170 | 100.00 |