TABLE 4.

Reference¹ and cutoff values² for calf circumference according to sex, ethnicity, and race, from participants with normal BMI³

	Males						Females
		Ref. values1	Cutoff values2					Ref. values1	Cutoff values2
	n	Mean ± SD	−1 SD	−1 SD RV	−2 SD	−2 SD RV	n	Mean ± SD	−1 SD	−1 SD RV	−2 SD	−2 SD RV
Total	1639	36.3 ± 2.2	34.1	34	31.9	32	1465	35.3 ± 2.3	33.0	33	30.7	31
Non-Hispanic white	633	36.6 ± 2.2	34.4	34	32.2	32	656	35.6 ± 2.2	33.4	33	31.2	31
Non-Hispanic black	429	36.4 ± 2.2	34.2	34	32.0	32	279	35.3 ± 2.2	33.1	33	30.9	31
Mexican American	428	34.9 ± 2.1	32.8	33	30.7	31	378	33.9 ± 2.3	31.6	32	29.3	29
Other ethnicity and race group	149	36.0 ± 2.1	33.9	34	31.8	32	152	34.6 ± 2.2	32.4	32	30.2	30

¹Reference values defined as mean values from participants aged 18–39 y.

²Cutoff values defined as 1 or 2 SDs below the mean values.

³Normal BMI: 18.5–24.9 kg/m²; for other BMI groups, use the adjusting factors for correction of calf circumference (Table 5). RV: rounded value.