Table 9.
Muscle disc ratio at various levels of lumbar spine initially and on follow-up (n=51)
| Vertebral level | Muscle disc ratio (cm2) |
Intergroup comparisons: p-valuea) (post hoc analysis) |
||||
|---|---|---|---|---|---|---|
| Initial (A) | 3 mo (B) | 6 mo (C) | A-B | A-C | B-C | |
| L1–2 | 0.55±0.05 | 0.56±0.05 | 0.54±0.05 | 1.000 | 1.000 | 0.491 |
| L2–3 | 0.56±0.05 | 0.56±0.05 | 0.54±0.05 | 1.000 | 1.000 | 0.491 |
| L3–4 | 0.55±0.05 | 0.54±0.05 | 0.54±0.05 | 1.000 | 1.000 | 0.491 |
| L4–5 | 1.07±0.05 | 1.05±0.05 | 1.05±0.05 | 0.032 | 0.694 | 1.000 |
| L5–S1 | 1.35±0.07 | 1.31±0.04 | 1.34±0.05 | 0.000 | 1.000 | 0.011 |
Values are presented as mean±standard deviation. A-B means initial versus 3 months; B-C means 3 months versus 6 months; A-C means initial versus 6 months.
a)
By repeated measures analysis of variance test.