TABLE 4.
Repeated Measures ANOVA of ODI Between the 2 Groups
| Mean±SD | ||||||
|---|---|---|---|---|---|---|
| ODI | Initial* | 3 mo† | 6 mo‡ | 12 mo§ | P for Time Differences | |
| Group A (n=20) | 22.3±10.77* | 17.9±9.42† | 18.9±9.89‡ | 15.2±11.38§ | 0.121 | No significance |
| Group B (n=20) | 26.8±6.23* | 18.9±7.07† | 16.4±7.87‡ | 12.3±6.46§ | <0.001 | a>b (0.020) a>c (0.020) a>d (<0.001) b>d (0.024) c>d (0.018) |
| P for group differences | 0.268 | 0.791 | 0.540 | 0.492 | ||
*
Data of initial.
†
Data of 3 months.
‡
Data of 6 months.
§
Data of 12 months.
ANOVA indicates analysis of variance; DBM, demineralized bone matrix; group A, DBM plus local bone group; group B, DBM plus cancellous bone group; ODI, Oswestry Disability Index.