Postoperative bisphosphonate do not significantly alter the fusion rate after lumbar spinal fusion: a meta-analysis

Table 6 Results of the forest plots for the ODI and VAS

Parameters	Number of patients	Number of included studies	MD	95% CI	P value	χ²	I²	Effect model
ODI at the 12-month follow-up	175	3	−1.98	−4.68, 0.72	0.15	0.10	56%	Random effect
VAS at 12-month follow-up	106	2	−0.34	−1.12, 0.44	0.39	0.05	74%	Random effect

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