Table 3.
Adjusted changes in the estimated pain scores and medication quantification scores after percutaneous balloon neuroplasty in patients with chronic spinal stenosis with and without sarcopenia.
| Variables | Time | Estimated Pain Score (95% CI) | Estimated Difference (95% CI) * | p-Value | |
|---|---|---|---|---|---|
| Non-Sarcopenia (n = 163) |
Sarcopenia (n = 314) |
||||
| Back pain (NRS) |
Baseline | 7.1 (6.6–7.6) | 6.9 (6.6–7.3) | −0.1 (−0.8–0.5) | 0.685 |
| 1 month | 5.2 (4.5–5.7) † | 4.8 (4.4–5.2) † | −0.4 (−1.0–0.3) | 0.257 | |
| 3 months | 5.3 (4.5–6.0) † | 4.8 (4.3–5.2) † | −0.5 (−1.4–0.4) | 0.268 | |
| 6 months | 5.1 (4.2–6.0) † | 4.6 (3.9–5.3) † | −0.5 (−1.7–0.6) | 0.347 | |
| Leg pain (NRS) |
Baseline | 7.3 (6.9–7.7) | 7.4 (7.0–7.7) | 0.1 (−0.5–0.6) | 0.846 |
| 1 month | 5.4 (5.0–5.8) † | 5.0 (4.7–5.3) † | −0.4 (−1.0–0.1) | 0.145 | |
| 3 months | 4.5 (3.8–5.1) † | 4.8 (4.4–5.2) † | 0.3 (−0.4–1.1) | 0.407 | |
| 6 months | 4.9 (4.1–5.6) † | 5.1 (4.4–5.7) † | 0.2 (−0.8–1.2) | 0.684 | |
| MQS | Baseline | 10.1 (8.9–11.3) | 7.8 (6.9–8.7) | −2.3 (−3.8–0.8) | 0.003 |
| 1 month | 9.7 (8.6–10.9) | 8.4 (7.6–9.2) | −1.3 (−2.8–0.1) | 0.071 | |
| 3 months | 9.7 (8.4–10.9) | 8.4 (7.5–9.3) | −1.3 (−2.9–0.3) | 0.112 | |
| 6 months | 9.1 (7.6–10.5) | 7.6 (6.6–8.6) | −1.4 (−3.2–0.3) | 0.114 | |
A numerical rating scale (NRS) was used to assess lower back and leg pain intensity. A generalized estimating equation model was used in the statistical analysis. Age, sex, body mass index, and medication quantification scale were included to adjust for demographic differences. Data are presented as estimated means with 95% confidence intervals (CIs). * Estimated difference in values between groups. † p < 0.001 compared to the baseline in each group. MQS, medication quantification scale.