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 projectsNumber of studiesSample sizeResultsHeterogeneity -values (I2)Statistical methodology
TotalZero-PPC-valueOR/WMDCI 95 per cent

Cervical curvaturePreoperative53211501710.69−0.23−1.38, 0.920.72 (0%)WMD (IV, fixed)
Postoperative53211501710.59−0.38−1.77, 1.010.85(0%)WMD (IV, fixed)
Intervertebral fusion rate63831841990.380.760.27, 2.480.97(0%)OR (M-H, fixed)
DHIPreoperative53801811990.65−0.04−0.14, 0.220.66(0%)WMD (IV, fixed)
Postoperative53801811990.6750.06−0.22, 0.340.03(63%)WMD (IV, random)
Dysphagia13904458446<0.000010.400.28, 0.580.62(0%)OR (M-H, fixed)
ALOD213363700.0010.090.02, 0.390.57(0%)OR (M-H, fixed)
ASD64402192210.020.420.20, 0.860.20(32%)OR (M-H, fixed)
Sinking rate of the cage54482212270.501.410.52, 3.820.09(51%)OR (M-H, random)
Screw loosening33261641620.00090.200.08, 0.520.25(28%)OR (M-H, fixed)