Table 3 Internal responsiveness of the NCOS to the clinical intervention (surgery)*
Preoperative | Postoperative | P** | |
|---|---|---|---|
Mean (SD) | Mean (SD) | ||
1. How far can you walk before having to stop and rest? | 1.4 (0.4) | 4.1 (0.5) | < 0.0001 |
2. How long can you stand still before having to sit down? | 1.3 (0.2) | 4.3 (0.7) | < 0.0001 |
3.Once your symptoms arise, you have:(back pain, leg pain, numbness/tingling, heaviness/weakness) | 5.7 (1.4) | 15.4 (2.6) | < 0.0001 |
4.The symptoms affect the following activities (sports or activities, household or odd jobs, walking, standing, sitting, sex life) | 8.6 (4.1) | 24.2 (2.4) | < 0.0001 |
5.How long must you rest before the symptoms resolve | 1.6 (0.9) | 4.6 (0.8) | < 0.0001 |
6.How frequently do you take pain medicine for these symptoms? | 2.1 (0.5) | 4.6 (0.4) | < 0.0001 |
7.How frequently do you see a doctor for these symptoms? | 2.3 (0.8) | 4.3 (0.9) | < 0.0001 |
8.Rank your pain on the VAS scale | 3.9 (2) | 8.2 (1.1) | < 0.0001 |
Total | 26.9 (12.7) | 69.7 (16.8) | < 0.0001 |