| clear up within about 6… | 0.76 |
| vary | 0.44 |
| originate in lower back | 0.40 |
| occur | 0.38 |
| radiate leg pain | 0.38 |
| include burning sensati… | 0.30 |
| radiate related disabil… | 0.29 |
| mild | 0.38 |
| severe | 0.38 |
| constant | 0.33 |
| intermittent | 0.28 |
| intense | 0.19 |
| felt on one side of the… | 0.63 |
| associated with sciatica | 0.56 |
| characterized by discom… | 0.29 |
| felt in buttock | 0.26 |
| caused by irritation | 0.22 |
| aggravated | 0.21 |
| relieved | 0.20 |
| associated with irritat… | 0.16 |