TABLE 2

Fat (Subcutaneous) and Muscle Layer Thickness Measurements for Thigh and Deltoid Muscles in Both Female and Male Patients Arranged by Age According to CDC Recommendations

SiteAgeFemaleMale
Fat Thickness ± SD, mmMuscle Thickness ± SD, mmFat Thickness ± SD, mmMuscle Thickness ± SD, mm
Thigh muscle1–12 mo14.65 ± 3.7618.83 ± 3.5110.98 ± 2.7715.33 ± 2.39
1–2 y11.36 ± 5.5119.40 ± 5.2812.23 ± 5.5420.87 ± 6.00
3–6 y13.00 ± 6.1025.04 ± 8.2911.32 ± 4.7624.76 ± 4.39
Deltoid muscle1–2 y9.56 ± 1.99a10.90 ± 3.856.40 ± 1.02a9.37 ± 1.85
3–18 y9.32 ± 5.42b15.72 ± 6.16c7.11 ± 5.69b17.96 ± 7.44c
  • a Two-sample t test; t test statistic = 2.58, P = .027.

  • b Two-sample t test; t test statistic = −1.94, P = .055.

  • c Two-sample t test; t test statistic = 2.34, P = .021.