Table 1.
Subject demographics, clinical presentation, and self report measures (n=12)
| All Subjects (n=12) | Standard deviation |
Min | Max | |
|---|---|---|---|---|
| Age (years) | 66.25 | 9.8 | 53 | 81 |
| Gender, % Male | 75.0 | |||
| Body Mass Index (BMI) | 33.4 | 7.8 | 18.8 | 47.1 |
| Duration of symptoms (years) | 4.7 | 1.5 | 1 | 10.8 |
| Back pain at rest | 10 (83.3%) | -- | ||
| Back pain w/ walking | 12 (100%) | -- | ||
| Leg pain at rest | 10 (83.3%) | -- | ||
| Leg pain w/ walking | 12 (100%) | -- | ||
| VAS back, pre SPWT (mm) | 39.9 | 27.0 | 0 | 78 |
| VAS back, post SPWT (mm) | 45.3 | 26 | 5 | 82 |
| VAS pain leg, pre SPWT* (mm) | 30.1 | 23.2 | 0 | 62 |
| VAS pain leg, post SPWT* (mm) | 51.8 | 26.9 | 9 | 87 |
| Quebec | 48.2 | 16.8 | 21 | 74 |
| PDI | 28.8 | 8.1 | 15.2 | 47 |
| Swiss.PF | 2.51 | 0.38 | 2 | 3.2 |
| Swiss.SS | 2.31 | 0.52 | 1.1 | 3 |
| Oswestry (%) | 48.9 | 11.6 | 28.3 | 69.8 |
| SF-36: | ||||
| General Health | 55.3 | 22.4 | 15 | 87 |
| Physical Functioning | 25.8 | 19.9 | 5 | 60 |
| Social Functioning | 52.1 | 19.8 | 25 | 75 |
| Role Limited – Physical | 14.6 | 31.0 | 0 | 100 |
| Role Limited – Emotional | 36.6 | 43.7 | 0 | 100 |
| Mental Health | 59.3 | 23.3 | 4 | 84 |
| Energy/Fatigue | 42.1 | 18.3 | 0 | 65 |
| Pain | 30.3 | 16.4 | 0 | 62 |
| Comparative Health | 56.3 | 21.7 | 25 | 100 |
| Quality of Life** | 3.2 | 0.84 | 1 | 5 |
| Overall health** | 3.3 | 1.1 | 2 | 5 |
| Life satisfaction** | 3.2 | 0.83 | 2 | 5 |
*
Score of most painful leg was used
**
from SF-36
VAS = Visual Analog Pain Scale
SPWT = Self-Paced Walking Test
Quebec = Quebec Back Pain Disability Scale
PDI = Pain Disability Index
Swiss.PF = Physical Function Scale of the Swiss Spinal Stenosis Questionnaire
Swiss.SS = Symptom Severity Scale of the Swiss Spinal Stenosis Questionnaire
Oswestry = Oswestry Disability Index