A Nomogram for Predicting the Residual Back Pain after Percutaneous Vertebroplasty for Osteoporotic Vertebral Compression Fractures

Table 1

Summary of VAS after surgery between group N and group R.

Follow-up	Group N (n = 231)	Group R (n = 37)	t	value
24 h	3.63 ± 0.48	5.16 ± 0.65	−16.997	≤0.001
3 d	2.66 ± 0.47	4.57 ± 0.65	−17.183	≤0.001
1 month	2.13 ± 0.65	4.24 ± 0.64	−18.318	≤0.001