Table 3.
Comparison of Numeric Rating Scale for pain and Oswestry Disability Index score summaries at four time points.
| Time Points | Numeric Pain Rating Score (Mean ± SD) | Oswestry Disability Index (Mean ± SD) | ||
|---|---|---|---|---|
| Group I (70) | Group II (70) | Group I (70) | Group II (70) | |
| Baseline | 7.8 ± 1.0 | 7.8 ± 0.9 | 30.3 ± 4.5 | 29.1 ± 4.5 |
| 3 months | 4.2* ± 1.8 (66%) | 4.1* ± 1.7 (69%) | 17.6* ± 6.3 (56%) | 16.8* ± 6.8 (57%) |
| 6 months | 4.3* ± 1.9 (60%) | 4.1* ± 1.7 (66%) | 17.6* ± 6.9 (56%) | 16.3* ± 7.0 (63%) |
| 12 months | 4.5* ± 1.9 (56%) | 4.2* ± 1.7 (61%) | 17.7* ± 6.9 (54%) | 16.5* ± 7.0 (61%) |
| 18 months | 4.6* ± 1.9 (50%) | 4.1* ± 1.8 (61%) | 17.9* ± 7.0 (50%) | 16.6* ± 6.9 (57%) |
| 24 months | 4.4* ± 1.9 (49%) | 4.2* ± 1.8 (56%) | 17.8* ± 7.2 (49%) | 16.6* ± 7.0 (56%) |
| Group Difference | 0.376 | 0.180 | ||
| Baseline vs follow-up points | 0.000 | 0.000 | ||
| Group by Time Interaction* | 0.310 | 0.896 | ||
Percentages in parenthesis illustrates proportion with significant pain relief (≥ 50%) from baseline
* indicates significant difference with baseline values (P < 0.05)
* Group by Time Interaction - There were no significant difference between groups at 3 months, 6 months, 12 months, 18 months and 24 months.