Table 5

Results of meta-analysis of radiological outcome measures

Outcomes or subgroups	No.of studies	No.of patients	Statistical method	Effect estimate (95% CI)^†	P value
(6) Vertebral height (%)
6.1 Baseline	2	265	WMD	−0.65 [−3.52, 2.23]	>.05
6.2 Postoperative	2	265	WMD	−17.75 [−20.73, −14.77]	<.05^*
6.3 Improvement	3	316	WMD	−7.25 [−8.45, −6.05]	<.05^*
(7) Vertebral height (mm)
7.1 Baseline	4	480	WMD	0.06 [−0.22, 0.33]	>.05
7.2 Postoperative	4	480	WMD	−2.38 [−2.67, −2.08]	<.05^*
7.3 Improvement	2	248	WMD	−2.00 [−2.75, −1.25]	<.05^*
(8) Kyphosis angle
8.1 Baseline	4	430	WMD	−1.01 [−1.98, −0.04]	>.05
8.2 Postoperative	4	430	WMD	4.25 [3.52,4.98]	<.05^*
8.3 Improvement	5	448	WMD	−5.65 [−6.13, −5.17]	<.05^*

WMD, indicatedweightedmeandifference;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.