TABLE 1.

Descriptive statistics for Chiari malformation type I patients in the study population (n=68)

Characteristic	Chiari I patients
Age at time of PSG, years, mean ± SD	7.33±4.01
Male sex, n (%)	38 (56)
Weight, kg, median (IQR)	24 (15.88–37.13)
Height, cm, mean ± SD	119.7±25.52
Body mass index*, percentile, median (IQR)	75.50 (56.00–91.00)
Previous adenoidectomy or tonsillectomy, n (%)	13 (19)
Previous decompression surgery, n (%)	10 (15)

^*Body mass index data not available for four children because they were younger than two years of age at the time of the study. IQR Interquartile range