Table 6.
Multiple regression analysis (unadjusted and adjusted) of effect of grade 1–2 pre-treatment multifidus muscle fat on pain and ODI at 2 years in each treatment group
| Pain | ODI | ||||||
|---|---|---|---|---|---|---|---|
| B | 95% CI for β | p-value | B | 95% CI for β | p-value | ||
| Rehab (n = 63 (pain)/64 (ODI)) | Unadjusted | -7.56 | -21.56–6.45 | 0.29 | -3.36 | -10.23–3.51 | 0.33 |
| Adjusteda | -5.93 | -25.18–13.31 | 0.54 | -1.49 | -10.46–7.48 | 0.74 | |
| Surgery (n = 81 (pain)/83 (ODI)) | Unadjusted | 7.40 | -4.93–19.73 | 0.24 | 7.35 | 0.40–14.29 | 0.04 |
| Adjusteda | 15.36 | 0.92–29.79 | 0.04 | 10.39 | 2.50–18.28 | 0.01 | |
ODI Oswestry Disability Index
aThe model is adjusted for age, gender, body mass index, smoking, and leisure time physical activity. In addition, the model for 2-year pain is adjusted for baseline pain, and the model for 2-year ODI is adjusted for baseline ODI