Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Efficacy evaluation
| Efficacy | ||||
|---|---|---|---|---|
| Cured | Significantly effective | Taking effect | Ineffective | |
| Evaluation index | ||||
| ODI score | ≤ 40% | 40–59% | 60–70% | > 70% |
| VAS score | < 2 | 2–3 | 4–5 | > 5 |
| BSF score | ≥ 3 | 2 | 1 | 0 |
VAS, visual analog scale; ODI, Oswestry disability index; BFS, Brantigan, Steffee, Fraser
