Table IV.
Interaction between sex and GMFCS level or severity (GMFCS III IV vs others). Values are adjusted for height and weight based on prediction from linear regression and are presented as mean (SEM). The p value is from linear regression including height, weight, sex, GMFCS level III to IV grouping, and sex × GMFCS level III to IV interaction
| Female | Male | p value for interaction | |||
|---|---|---|---|---|---|
| GMFCS level III–IV (n=12) | Others (n=26/7a) | GMFCS level III–IV (n=8) | Others (n=28/10)a | ||
| L3 CSA (mm2) | 672 (26) | 799 (21) | 704 (24) | 785 (16) | 0.064 |
| Tibia CSA (mm2) | 185 (17) | 291 (30) | 209 (16) | 262 (22) | 0.025 |
| Tibia CBA (mm2) | 129 (11) | 191 (17) | 142 (10) | 176 (12) | 0.054 |
a
Larger n is for L3 CSA, smaller n is for tibia measures. GMFCS, Gross Motor Function Classification System; CSA, cross-sectional area; CBA, cortical bone area.