Table 1.

Comparison of the mean VAS score results between the techniques, for each measurement time.

	Pre-block	24 h afterwards	7 days afterwards	21 days afterwards	90 days afterwards
Transforaminal technique	8.81	0.71	1.05	2.33	3.84
Interlaminar technique	8.89	0.89	1.53	3.65	4.88
p value	0.774	0.492	0.256	0.022	0.195

Mann–Whitney test (comparison between two non-normal independent samples).