Intradiscal Autologous Platelet-Rich Plasma Injection for Discogenic Low Back Pain: A Clinical Trial

Table 3

Patient-reported outcome measures at 48 weeks postinjection.

PROM	Overall
	Total	Mean	SD
Current NRS pain	31	3.4	1.4
Best NRS pain	31	3.0	1.9
Worst NRS pain	31	4.6	1.8
FRI score	31	39.2	7.0
SF-36 pain score	31	66.8	18.1
SF-36 physical function score	31	67.7	14.4

FRI: functional rating index; NRS: numerical rating scale; PROM: patient-reported outcome measure; SD: standard deviation; SF-36: 36-item short form.