Table 10.

Subtotal fat-free mass (total fat-free mass excluding the head) in kilograms for examined persons 8 years of age and older, by sex, race and ethnicity, and age: United States, 1999–2004

Sex, race and ethnicity, and age	Sample size	Mean	Standard error of the mean	Percentile
				5th	10th	15th	25th	50th	75th	85th	90th	95th
Male				Kilograms
All race and ethnicity:
Age 20 years and older, age adjusted	6,559	58.0	0.1	…	…	…	…	…	…	…	…	…
Age 20 years and older, crude	6,559	58.3	0.2	43.2	46.3	48.3	51.5	57.4	64.0	67.9	70.7	75.3
Age:
8–11 years	1,067	24.1	0.2	16.4	17.6	18.5	20.1	23.3	27.1	29.8	31.9	34.7
12–15 years	1,726	41.3	0.4	24.3	27.1	29.3	32.6	40.8	48.9	52.5	56.0	59.9
16–19 years	1,751	54.6	0.3	41.4	43.8	45.2	47.7	53.4	60.3	64.2	67.5	70.9
20–39 years	2,183	58.7	0.3	43.7	46.6	48.5	51.7	57.4	64.4	68.7	71.5	77.6
40–59 years	2,024	59.6	0.3	45.4	48.3	50.5	53.0	59.2	65.0	68.7	71.4	75.5
60–79 years	1,851	55.8	0.3	42.0	44.3	46.4	49.5	55.2	61.6	65.1	67.6	71.1
80 years and older	501	48.7	0.3	37.6	40.2	41.9	44.2	48.1	52.9	55.9	58.0	61.0
Mexican American:
Age 20 years and older, age adjusted	1,488	53.5	0.2	…	…	…	…	…	…	…	…	…
Age 20 years and older, crude	1,488	54.1	0.4	41.9	43.9	45.4	48.2	53.3	59.1	62.2	64.6	69.0
Age:
8–11 years	348	24.3	0.3	16.0	17.0	17.9	19.5	23.1	27.7	31.4	33.2	35.5
12–15 years	599	40.6	0.5	24.2	27.2	29.7	33.6	40.4	47.3	51.0	53.0	57.1
16–19 years	611	51.6	0.4	39.4	41.5	43.2	45.3	50.2	56.5	61.3	63.1	67.9
20–39 years	570	54.0	0.6	41.7	43.7	45.0	47.7	53.0	59.4	62.4	64.8	69.4
40–59 years	427	55.0	0.4	43.0	45.8	47.1	49.7	54.4	59.3	62.8	65.0	69.1
60–79 years	443	52.3	0.4	41.0	43.0	44.2	46.5	51.7	57.0	60.1	62.2	66.2
80 years and older	48	45.3	0.7	35.4	39.3	39.8	41.0	45.4	48.5	50.2	51.4	†
Non-Hispanic white:
Age 20 years and older, age adjusted	3,320	58.9	0.2	…	…	…	…	…	…	…	…	…
Age 20 years and older, crude	3,320	59.0	0.2	44.6	47.4	49.5	52.6	58.3	64.5	68.2	70.8	75.0
Age:
8–11 years	280	23.7	0.3	16.4	17.6	18.6	19.9	23.3	26.3	28.5	30.8	33.1
12–15 years	438	41.2	0.5	24.3	27.0	29.3	32.4	40.8	48.9	52.3	55.6	59.4
16–19 years	447	55.3	0.4	42.2	44.4	45.6	48.3	54.3	61.3	64.6	67.8	70.8
20–39 years	934	59.6	0.4	45.2	47.9	49.9	52.9	58.4	65.2	69.0	71.5	77.8
40–59 years	1,013	60.5	0.3	46.8	49.9	51.5	54.5	60.0	65.8	69.2	71.6	75.7
60–79 years	975	56.5	0.3	42.9	45.2	47.4	50.7	55.9	62.2	65.6	68.1	71.4
80 years and older	398	48.9	0.3	38.5	40.5	42.7	44.6	48.2	53.0	56.0	58.0	60.6
Non-Hispanic black:
Age 20 years and older, age adjusted	1,245	59.9	0.3	…	…	…	…	…	…	…	…	…
Age 20 years and older, crude	1,245	60.6	0.4	44.7	47.4	49.6	52.9	59.5	67.0	71.5	75.0	80.4
Age:
8–11 years	359	25.7	0.4	17.2	18.7	19.8	21.7	24.7	28.4	31.9	34.6	37.9
12–15 years	566	43.9	0.4	26.2	29.0	31.4	35.4	43.6	51.0	55.2	58.9	63.1
16–19 years	551	56.6	0.5	42.2	44.7	46.5	49.5	55.3	61.5	66.3	69.8	75.0
20–39 years	450	61.8	0.6	46.0	48.6	50.7	53.3	60.2	68.0	73.1	77.0	84.7
40–59 years	435	60.8	0.5	44.9	48.2	50.3	53.9	59.6	67.1	71.8	74.6	79.1
60–79 years	324	56.8	0.5	41.5	44.6	46.6	49.6	56.7	62.4	67.2	69.5	73.3
80 years and older	36	49.5	1.4	†	37.5	40.5	43.5	49.0	53.5	56.5	59.9	†
Female
All race and ethnicity:
Age 20 years and older, age adjusted	6,532	40.6	0.1	…	…	…	…	…	…	…	…	…
Age 20 years and older, crude	6,532	40.6	0.2	30.2	32.0	33.3	35.2	39.4	44.7	48.3	50.7	54.7
Age:
8–11 years	1,082	23.9	0.3	14.7	16.0	17.0	18.8	23.1	27.9	30.8	33.0	35.9
12–15 years	1,780	35.2	0.2	25.8	27.7	29.0	31.0	34.6	38.7	41.2	43.5	47.2
16–19 years	1,513	38.4	0.2	29.0	30.4	31.8	33.5	37.5	42.0	44.9	47.2	51.0
20–39 years	2,043	41.1	0.2	31.0	32.8	34.0	35.8	39.9	45.0	48.7	51.2	55.1
40–59 years	2,049	41.8	0.3	31.0	32.9	34.1	36.1	40.6	46.1	49.6	52.2	56.0
60–79 years	1,846	38.9	0.2	29.9	31.1	32.5	34.1	37.9	42.7	45.6	48.1	51.5
80 years and older	594	34.7	0.4	26.8	28.0	29.2	30.5	34.0	37.9	40.1	41.9	44.9
Mexican American:
20 years and older, age adjusted	1,438	38.4	0.2	…	…	…	…	…	…	…	…	…
20 years and older, crude	1,438	38.9	0.3	29.1	31.0	32.2	34.0	38.0	42.9	46.1	48.1	51.6
Age:
8–11 years	342	22.4	0.4	14.2	15.3	15.8	17.5	21.0	26.5	29.3	31.1	34.1
12–15 years	632	34.3	0.3	25.1	27.1	28.1	30.0	33.6	37.8	39.8	42.9	46.9
16–19 years	533	36.4	0.3	27.5	28.9	29.8	31.5	35.2	39.8	42.3	45.3	50.0
20–39 years	492	38.9	0.4	29.1	31.1	32.3	34.1	38.1	42.7	45.8	48.2	51.6
40–59 years	442	40.0	0.4	30.2	31.3	32.6	34.8	39.1	44.6	47.1	48.8	52.2
60–79 years	457	36.7	0.3	28.3	29.7	30.7	32.4	36.3	40.3	42.6	44.6	47.3
80 years and older	47	30.7	0.8	23.2	26.3	26.7	27.4	30.0	32.8	34.3	35.6	†
Non-Hispanic white:
20 years and older, age adjusted	3,250	40.6	0.1	…	…	…	…	…	…	…	…	…
20 years and older, crude	3,250	40.4	0.2	30.5	32.4	33.4	35.3	39.3	44.3	47.9	50.1	53.7
Age:
8–11 years	281	23.8	0.4	14.6	16.2	17.1	18.8	23.1	27.6	30.3	32.1	35.5
12–15 years	448	34.8	0.3	25.6	27.7	28.6	30.7	34.4	38.5	40.6	42.3	45.1
16–19 years	409	38.6	0.3	29.7	31.6	32.5	33.9	37.7	41.9	44.9	47.0	50.6
20–39 years	907	40.9	0.2	31.6	33.2	34.3	36.1	39.9	44.6	48.0	50.4	53.5
40–59 years	964	41.8	0.3	31.7	33.3	34.5	36.3	40.6	46.0	49.6	51.8	55.7
60–79 years	922	38.7	0.2	30.1	31.2	32.6	34.1	37.9	42.3	45.1	47.5	50.6
80 years and older	457	34.7	0.4	27.0	28.1	29.3	30.6	34.0	37.8	40.0	41.8	44.6
Non-Hispanic black:
20 years and older, age adjusted	1,312	44.7	0.2	…	…	…	…	…	…	…	…	…
20 years and older, crude	1,312	45.0	0.2	33.1	35.2	36.7	38.7	43.6	49.9	54.0	56.5	60.5
Age:
8–11 years	373	25.9	0.4	15.5	18.0	18.9	20.4	24.6	30.1	33.8	35.8	38.4
12–15 years	558	38.4	0.4	29.0	30.8	32.1	33.7	37.2	42.3	45.5	47.8	51.7
16–19 years	435	41.6	0.4	31.2	32.5	33.8	35.8	39.5	46.0	49.9	52.2	57.9
20–39 years	455	45.4	0.5	33.3	35.6	36.8	38.7	43.4	51.2	55.3	57.9	62.0
40–59 years	453	45.7	0.3	33.7	36.1	37.2	39.6	44.6	49.9	53.9	56.2	61.0
60–79 years	346	43.6	0.4	32.8	34.5	35.4	37.7	43.1	48.0	51.5	54.1	57.7
80 years and older	58	37.5	0.9	26.9	30.0	30.9	33.3	37.4	40.8	43.1	46.0	48.0

… Category not applicable.

^†Standard error not calculated by SUDAAN.

NOTE: Subtotal fat-free mass includes bone mineral content.