Table 3. Pain relief in terms of NPRS in the study population (pre-PVP and post-PVP).

PVP = percutaneous vertebroplasty; SEM = standard error of the mean; df = degree of freedom; NS = non-significant; S = significant; NPRS = Numeric Pain Rating Scale

Period	Mean ± SD	SEM	t	df	P-value
Pre-PVP	9.17 ± 1.30	0.271	33.71	22	0.134 (NS)
One week	5.34 ± 1.61	0.336	15.90		0.033 (S)
One month	2.91 ± 1.23	0.258	11.26		0.021 (S)
Three months	1.73 ± 1.25	0.260	6.67		0.014 (S)
Six months	1.65 ± 1.30	0.271	6.09		0.001 (S)