Table 5.

Total fat-free mass 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	61.9	0.2	…	…	…	…	…	…	…	…	…
Age 20 years and older, crude	6,559	62.2	0.2	46.7	49.8	52.0	55.2	61.3	68.1	72.1	74.9	79.9
Age:
8–11 years	1,067	27.1	0.2	19.0	20.3	21.3	22.7	26.3	30.2	32.8	35.2	38.0
12–15 years	1,726	44.7	0.4	27.2	30.0	32.6	35.8	44.2	52.4	56.1	59.9	64.1
16–19 years	1,751	58.4	0.3	44.7	47.2	48.5	51.4	57.3	64.3	68.1	71.7	75.2
20–39 years	2,183	62.6	0.3	47.1	50.2	52.2	55.4	61.2	68.6	73.0	75.7	82.1
40–59 years	2,024	63.6	0.3	48.8	52.0	54.2	56.9	63.1	69.2	72.9	75.7	80.2
60–79 years	1,851	59.7	0.3	45.4	47.7	50.1	53.2	59.1	65.7	69.2	71.9	75.5
80 years and older	501	52.3	0.3	40.6	43.6	45.3	47.7	51.8	56.9	59.8	61.8	65.1
Mexican American:
Age 20 years and older, age adjusted	1,488	57.4	0.2	…	…	…	…	…	…	…	…	…
Age 20 years and older, crude	1,488	57.9	0.4	45.3	47.4	49.2	51.9	57.2	63.1	66.3	68.7	73.2
Age:
8–11 years	348	27.3	0.4	18.6	19.8	20.7	22.3	26.1	30.6	34.8	36.5	39.1
12–15 years	599	44.0	0.5	27.2	30.1	32.8	36.8	43.9	50.8	54.6	56.9	61.1
16–19 years	611	55.3	0.5	42.6	44.9	46.6	48.9	53.8	60.5	65.1	67.2	72.2
20–39 years	570	57.8	0.6	45.2	47.2	48.6	51.3	57.0	63.3	66.3	68.8	73.8
40–59 years	427	58.9	0.4	46.5	49.2	50.7	53.4	58.2	63.1	66.9	69.1	73.3
60–79 years	443	56.1	0.4	44.6	46.5	47.7	50.2	55.6	60.9	64.3	66.4	70.5
80 years and older	48	48.9	0.7	38.7	42.8	43.1	44.5	48.9	52.2	53.7	55.1	†
Non-Hispanic white:
Age 20 years and older, age adjusted	3,320	62.8	0.2	…	…	…	…	…	…	…	…	…
Age 20 years and older, crude	3,320	62.9	0.2	48.0	51.0	53.1	56.3	62.3	68.7	72.4	75.0	79.6
Age:
8–11 years	280	26.7	0.3	19.0	20.2	21.4	22.7	26.2	29.4	31.9	33.8	36.5
12–15 years	438	44.5	0.6	27.2	30.0	32.6	35.5	44.1	52.5	55.9	59.4	63.4
16–19 years	447	59.1	0.4	45.5	48.0	49.2	51.7	58.3	65.2	68.9	71.8	75.1
20–39 years	934	63.5	0.4	48.9	51.5	53.5	56.6	62.4	69.3	73.2	75.7	82.1
40–59 years	1,013	64.5	0.3	50.3	53.5	55.1	58.4	64.1	70.0	73.3	75.9	80.2
60–79 years	975	60.4	0.3	46.3	48.7	51.1	54.4	59.8	66.4	69.8	72.3	75.8
80 years and older	398	52.6	0.3	41.7	44.1	46.1	48.0	52.0	57.1	59.8	61.7	64.8
Non-Hispanic black:
Age 20 years and older, age adjusted	1,245	64.0	0.3	…	…	…	…	…	…	…	…	…
Age 20 years and older, crude	1,245	64.7	0.4	48.3	51.1	53.4	56.8	63.6	71.3	75.8	79.6	84.7
Age:
8–11 years	359	28.8	0.4	19.9	21.5	22.6	24.6	27.6	31.6	35.1	38.1	41.6
12–15 years	566	47.4	0.4	29.1	32.2	34.6	38.8	47.1	54.8	59.0	62.9	67.1
16–19 years	551	60.5	0.6	45.7	48.3	50.0	53.3	59.0	65.6	70.6	74.1	79.4
20–39 years	450	66.0	0.6	49.7	52.4	54.4	57.2	64.3	72.2	77.6	81.6	89.4
40–59 years	435	64.9	0.5	48.4	51.7	54.0	57.8	63.8	71.4	76.2	79.0	83.6
60–79 years	324	60.9	0.6	45.2	48.3	50.3	53.4	60.9	66.9	71.5	74.0	77.9
80 years and older	36	53.3	1.4	†	40.7	44.3	46.9	52.8	57.4	60.4	64.1	†
Female
All race and ethnicity:
Age 20 years and older, age adjusted	6,532	44.0	0.1	…	…	…	…	…	…	…	…	…
Age 20 years and older, crude	6,532	43.9	0.2	33.2	35.1	36.4	38.5	42.8	48.1	51.9	54.3	58.5
Age:
8–11 years	1,082	26.8	0.3	17.2	18.6	19.6	21.5	25.9	30.9	33.9	36.3	39.2
12–15 years	1,780	38.4	0.2	28.6	30.5	31.9	34.0	37.8	42.0	44.7	47.1	50.8
16–19 years	1,513	41.7	0.2	32.0	33.5	34.9	36.7	40.8	45.4	48.4	50.8	54.8
20–39 years	2,043	44.5	0.2	34.0	35.8	37.1	39.0	43.2	48.5	52.4	55.1	59.2
40–59 years	2,049	45.1	0.3	34.0	36.0	37.2	39.3	44.0	49.5	53.2	56.0	59.6
60–79 years	1,846	42.1	0.2	32.8	34.2	35.5	37.2	41.1	46.2	49.1	51.6	55.2
80 years and older	594	37.8	0.4	29.5	30.9	32.1	33.5	37.0	41.1	43.5	45.3	48.3
Mexican American:
Age 20 years and older, age adjusted	1,438	41.8	0.2	…	…	…	…	…	…	…	…	…
Age 20 years and older, crude	1,438	42.3	0.3	32.1	34.0	35.3	37.2	41.4	46.5	49.7	51.7	55.3
Age:
8–11 years	342	25.2	0.4	16.8	17.7	18.4	20.2	23.7	29.5	32.3	34.2	37.2
12–15 years	632	37.6	0.3	28.0	30.1	31.2	33.1	36.7	41.2	43.2	46.4	50.6
16–19 years	533	39.7	0.3	30.4	31.9	33.0	34.6	38.4	43.2	45.8	48.8	53.8
20–39 years	492	42.3	0.4	32.0	34.3	35.6	37.4	41.6	46.3	49.6	51.8	55.5
40–59 years	442	43.3	0.4	33.3	34.4	35.9	38.1	42.5	48.1	50.7	52.3	55.8
60–79 years	457	39.9	0.3	31.2	32.6	33.7	35.6	39.5	43.6	46.2	48.2	50.9
80 years and older	47	33.6	0.8	25.7	29.0	29.6	30.4	32.9	35.7	37.3	38.7	†
Non-Hispanic white:
Age 20 years and older, age adjusted	3,250	43.9	0.1	…	…	…	…	…	…	…	…	…
Age 20 years and older, crude	3,250	43.7	0.2	33.4	35.5	36.6	38.5	42.6	47.7	51.4	53.6	57.2
Age:
8–11 years	281	26.6	0.4	17.0	18.7	19.7	21.4	25.9	30.6	33.2	35.2	38.7
12–15 years	448	37.9	0.3	28.4	30.4	31.6	33.7	37.4	41.6	44.0	45.7	48.5
16–19 years	409	41.8	0.3	32.7	34.6	35.5	37.0	40.9	45.4	48.4	50.5	54.1
20–39 years	907	44.3	0.2	34.7	36.2	37.4	39.2	43.1	47.9	51.6	54.0	57.0
40–59 years	964	45.1	0.3	34.8	36.4	37.5	39.4	43.9	49.4	53.1	55.4	59.3
60–79 years	922	42.0	0.2	33.0	34.2	35.6	37.2	41.1	45.5	48.6	50.9	54.2
80 years and older	457	37.8	0.4	29.9	31.0	32.3	33.6	37.0	41.1	43.3	45.2	47.9
Non-Hispanic black:
Age 20 years and older, age adjusted	1,312	48.4	0.3	…	…	…	…	…	…	…	…	…
Age 20 years and older, crude	1,312	48.7	0.2	36.4	38.5	40.0	42.2	47.3	53.6	57.9	60.4	64.7
Age:
8–11 years	373	28.9	0.4	18.1	20.6	21.5	23.1	27.5	33.1	37.0	39.1	42.3
12–15 years	558	41.8	0.4	31.9	33.9	35.1	36.9	40.6	45.8	49.2	51.6	55.7
16–19 years	435	45.2	0.4	34.3	35.8	37.1	39.2	43.1	49.7	53.8	56.2	62.0
20–39 years	455	49.1	0.5	36.6	38.9	40.1	42.3	47.1	55.0	59.5	61.9	66.4
40–59 years	453	49.4	0.4	37.0	39.3	40.5	43.2	48.5	53.6	57.9	60.1	64.9
60–79 years	346	47.2	0.5	35.9	37.7	39.0	41.1	46.7	51.6	55.2	58.0	61.6
80 years and older	58	40.8	0.9	29.6	33.0	33.9	36.3	40.8	44.5	46.5	49.6	52.0

… Category not applicable.

^†Standard error not calculated by SUDAAN.

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