Results of meta-analysis of perioperative outcome measures
| Outcomes or subgroups | No. of studies | No. of patients | Statistical method | Effect estimate (95% CT)† | P value |
|---|---|---|---|---|---|
| (1) Volume of cement | 6 | 615 | WMD | −0.75 [−0.93, −0.57] | <.05* |
| (2) Operative time | 2 | 188 | WMD | −3.44 [–4.94, −1.94] | <.05* |
WMD, indicated weighted mean difference; CI, confidence interval.
If effect estimate is positive (> 0), it means vertebroplasty group is more than kyphoplasty group. If it is negative (< 0), it means vertebroplasty group is less than kyphoplasty group. Whether it is significant lies on the P value.
↵* Statistically significant.
↵† Effect estimate.