Table 1.
Demographic information for the PWS, OB, and control groups.
| Group | P value | ||||||
|---|---|---|---|---|---|---|---|
| Variable | Control | OB | PWS | A | B | C | |
| Sex (Boys/Girls) | 6/12 | 6/12 | 4/8 | 1.000 | 1.000 | 1.000 | |
| Age (years) | 8.3 (0.9) | 9.0 (0.9) | 7.2 (1.2) | 0.466 | 0.252 | 0.594 | |
| BMI-z | 0.79 (0.21) | 3.06 (0.19) | 2.16 (0.25) | 0.000 | 0.014 | 0.000 | |
| TIV (mm3) | 1,383.3 (144.5) | 1,365.6 (119.6) | 1,307.7 (138.0) | 0.173 | 0.238 | 0.704 | |
Data are presented as the mean (standard deviation) for continuous variables and n/n for sex. Bold, P < 0.05. PWS, children with Prader-Willi syndrome; OB, obese children without PWS; BMI-z, body mass index standard deviation score; TIV, total intracranial volume. A: comparison between the PWS and control groups (PWS vs. control). B: Comparison between the PWS and OB groups (PWS vs. OB). C: Comparison between the OB and control groups (OB vs. control).