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Table 2:  Comparison of the number of levels treated regardless of procedure type, number of levels treated by kyphoplasty versus vertebroplasty, number of levels treated by transpedicular versus parapedicular approach, and number of levels treated by unilateral versus bilateral approach
Groups, No. of Levels Treated Pain after VA (mean) No Pain after VA (mean) P Value^a
Total 57 (1.80) 189 (2.01) .49
By kyphoplasty 45 (1.6) 138 (1.5) .23
By transpedicular approach 53 (1.8) 150 (1.6) .17
By unilateral approach 38 (1.3) 149 (1.6) .17

Note:—VA, vertebral augmentation.

↵a  Mann-Whitney U test.

Groups, No. of Levels Treated	Pain after VA (mean)	No Pain after VA (mean)	P Value^a
Total	57 (1.80)	189 (2.01)	.49
By kyphoplasty	45 (1.6)	138 (1.5)	.23
By transpedicular approach	53 (1.8)	150 (1.6)	.17
By unilateral approach	38 (1.3)	149 (1.6)	.17