Table II.

Primary Outcomes

	Vertebroplasty Group	Control Group	Treatment Effect (95% CI)	P Value
Measure
RDQ
At baseline	16.6 ± 3.8	17.5 ± 4.1
At 3 days	13.0 ± 5.2	12.5 ± 5.5	−0.9 (−2.7 to 0.8)	0.30
At 14 days	12.4 ± 5.8	12.3 ± 5.9	−0.6 (−2.4 to 1.2)	0.35
At 1 mo	12.0 ± 6.3	13.0 ± 6.4	0.7 (−1.3 to 2.8)	0.49
Pain intensità
At baseline	6.9 ± 2.0	7.2 ± 1.8
At 3 days	4.2 ± 2.8	3.9 ± 2.9	−0.4 (−1.5 to 0.5)	0.37
At 14 days	4.3 ± 2.9	4.5 ± 2.8	0.1 (−0.8 to 1.1)	0.77
At 1 mo	3.9 ± 2.9	4.6 ± 3.0	–0.7 (−0.3 to 1.7)	0.19

Plus-minus values are means ± SD.

Between-group comparisons, confidence intervals, and P values were calculated with the use of analysis-of-covariance models with adjustment for studygroup assignment, baseline value of the outcome measure, and study center. Negative treatment effects favor the control procedure, and positive treatment effects favor vertebroplasty.

Scores on the Roland-Morris Disability Questionnaire (RDQ) range from 0 to 23, with higher scores indicating more severe disability.

Scores on the pain-intensity scale range from 0 (no pain) to 10 (worst pain).