Table 3.
Comparison of the numeric rating scale for pain and Oswestry Disability Index score summaries at six time points
| Time points | Mean ± standard deviation | |||
|---|---|---|---|---|
|
|
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| Numeric pain rating score | Oswestry Disability Index | |||
|
|
|
|||
| Group I (n = 60) | Group II (n = 60) | Group I (n = 60) | Group II (n = 60) | |
| Baseline | 7.9 ± 0.8 | 8.1 ± 0.8 | 28.6 ± 4.1 | 31.2 ± 4.1 |
| 3 months | 4.9* ± 1.6 | 3.4* ± 0.8 | 20.2* ± 6.6 | 15.2* ± 4.1 |
| 6 months | 5.8* ± 1.5 | 3.7* ± 1.1 | 22.3* ± 6.1 | 15.2* ± 5.2 |
| 12 months | 6.1* ± 1.4 | 4.0* ± 1.2 | 23.3* ± 5.8 | 15.8* ± 5.6 |
| 18 months | 6.1* ± 1.4 | 3.6* ± 1.2 | 23.3 ± 5.7 | 14.6 ± 4.6 |
| 24 months | 6.2* ± 1.4 | 3.6* ± 1.1 | 23.2 ± 6.7 | 13.9 ± 5.1 |
| Group difference | 0.001 | 0.001 | ||
| Baseline versus follow-up points | 0.001 | 0.001 | ||
| Group by time interaction# | 0.001 | 0.001 | ||
Notes:
*
Significant difference with baseline values (P < 0.05);
#
there was significant difference between groups at 3 months, 6 months, 12 months, 18 months, and 24 months.