Review Article
Anterior Cervical Discectomy and Fusion Using Zero-P System for Treatment of Cervical Spondylosis: A Meta-Analysis
Table 3
Meta-analysis results of included studies.
| Research projects | Number of studies | Sample size | Results | Heterogeneity -values (I2) | Statistical methodology | Total | Zero-P | PC | -value | OR/WMD | CI 95 per cent |
| Cervical curvature | Preoperative | 5 | 321 | 150 | 171 | 0.69 | −0.23 | −1.38, 0.92 | 0.72 (0%) | WMD (IV, fixed) | | Postoperative | 5 | 321 | 150 | 171 | 0.59 | −0.38 | −1.77, 1.01 | 0.85(0%) | WMD (IV, fixed) | Intervertebral fusion rate | 6 | 383 | 184 | 199 | 0.38 | 0.76 | 0.27, 2.48 | 0.97(0%) | OR (M-H, fixed) | DHI | Preoperative | 5 | 380 | 181 | 199 | 0.65 | −0.04 | −0.14, 0.22 | 0.66(0%) | WMD (IV, fixed) | | Postoperative | 5 | 380 | 181 | 199 | 0.675 | 0.06 | −0.22, 0.34 | 0.03(63%) | WMD (IV, random) | Dysphagia | 13 | 904 | 458 | 446 | <0.00001 | 0.40 | 0.28, 0.58 | 0.62(0%) | OR (M-H, fixed) | ALOD | 2 | 133 | 63 | 70 | 0.001 | 0.09 | 0.02, 0.39 | 0.57(0%) | OR (M-H, fixed) | ASD | 6 | 440 | 219 | 221 | 0.02 | 0.42 | 0.20, 0.86 | 0.20(32%) | OR (M-H, fixed) | Sinking rate of the cage | 5 | 448 | 221 | 227 | 0.50 | 1.41 | 0.52, 3.82 | 0.09(51%) | OR (M-H, random) | Screw loosening | 3 | 326 | 164 | 162 | 0.0009 | 0.20 | 0.08, 0.52 | 0.25(28%) | OR (M-H, fixed) |
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