Table 15.

Trunk 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	30.0	0.1	…	…	…	…	…	…	…	…	…
Age 20 years and older, crude	6,559	30.1	0.1	22.5	23.9	25.0	26.7	29.6	33.0	35.0	36.6	39.0
Age:
8–11 years	1,067	12.1	0.1	8.4	8.9	9.4	10.2	11.8	13.6	14.8	16.1	17.5
12–15 years	1,726	20.3	0.2	12.0	13.3	14.3	16.2	20.2	24.0	26.1	27.5	29.8
16–19 years	1,751	27.2	0.2	20.8	21.7	22.6	24.0	26.7	29.8	32.0	33.4	35.7
20–39 years	2,183	29.8	0.2	22.4	23.7	24.7	26.1	29.1	32.6	34.7	36.5	39.6
40–59 years	2,024	30.9	0.1	23.4	24.9	26.1	27.6	30.5	33.7	35.7	37.2	39.2
60–79 years	1,851	29.7	0.2	22.3	23.6	24.7	26.3	29.3	32.8	34.4	36.1	37.9
80 years and older	501	26.3	0.2	20.2	21.8	22.7	24.0	26.0	28.3	30.3	31.4	33.1
Mexican American:
Age 20 years and older, age adjusted	1,488	28.1	0.1	…	…	…	…	…	…	…	…	…
Age 20 years and older, crude	1,488	28.1	0.2	21.9	22.9	23.6	24.9	27.7	30.7	32.4	33.4	35.9
Age:
8–11 years	348	12.4	0.2	8.4	8.9	9.2	10.0	11.8	14.0	16.1	16.9	18.4
12–15 years	599	20.3	0.2	12.1	13.3	14.9	16.8	20.1	23.6	25.5	26.8	28.5
16–19 years	611	26.1	0.2	19.9	21.0	21.9	22.9	25.3	28.6	30.8	31.9	34.4
20–39 years	570	27.8	0.3	21.7	22.5	23.3	24.6	27.4	30.4	32.3	33.3	35.7
40–59 years	427	28.8	0.2	22.7	23.9	24.7	26.2	28.6	31.2	32.4	33.7	36.2
60–79 years	443	28.1	0.2	21.9	23.2	23.9	25.2	27.8	30.7	32.4	33.4	35.2
80 years and older	48	24.7	0.4	19.1	21.1	21.7	22.3	24.2	26.8	28.1	28.7	†
Non-Hispanic white:
Age 20 years and older, age adjusted	3,320	30.6	0.1	…	…	…	…	…	…	…	…	…
Age 20 years and older, crude	3,320	30.7	0.1	23.4	24.8	25.8	27.3	30.2	33.4	35.5	36.9	39.1
Age:
8–11 years	280	12.1	0.2	8.4	9.0	9.5	10.3	11.9	13.4	14.5	15.4	17.2
12–15 years	438	20.5	0.3	12.1	13.4	14.6	16.1	20.5	24.2	26.3	27.5	29.9
16–19 years	447	27.8	0.2	21.3	22.4	23.1	24.6	27.5	30.4	32.5	33.8	35.9
20–39 years	934	30.4	0.2	23.2	24.5	25.5	27.1	29.7	33.1	35.4	36.6	39.9
40–59 years	1,013	31.5	0.2	24.4	26.0	26.9	28.3	31.1	34.1	36.1	37.7	39.6
60–79 years	975	30.2	0.2	23.0	24.3	25.2	26.9	29.8	33.1	35.0	36.5	38.1
80 years and older	398	26.5	0.2	20.7	22.2	22.9	24.2	26.2	28.6	30.4	31.5	33.0
Non-Hispanic black:
Age 20 years and older, age adjusted	1,245	29.5	0.2	…	…	…	…	…	…	…	…	…
Age 20 years and older, crude	1,245	29.7	0.2	22.3	23.6	24.4	26.0	29.0	32.7	34.8	36.7	39.9
Age:
8–11 years	359	12.3	0.2	8.3	9.1	9.5	10.3	11.7	13.6	15.2	16.2	17.8
12–15 years	566	20.5	0.2	12.0	13.5	14.5	16.6	20.4	23.8	25.9	27.6	29.7
16–19 years	551	26.8	0.2	20.0	21.3	21.9	23.4	26.3	29.1	31.3	32.7	35.7
20–39 years	450	29.8	0.3	22.6	23.7	24.4	25.7	29.0	32.4	35.0	36.9	40.9
40–59 years	435	30.0	0.2	22.3	24.0	24.8	26.6	29.5	33.1	35.1	36.8	39.5
60–79 years	324	28.9	0.3	21.2	22.8	23.7	25.3	28.5	31.9	34.0	35.5	37.6
80 years and older	36	25.2	0.7	†	†	20.0	22.9	25.2	27.3	28.6	30.3	†
Female
All race and ethnicity:
Age 20 years and older, age adjusted	6,532	21.8	0.1	…	…	…	…	…	…	…	…	…
Age 20 years and older, crude	6,532	21.8	0.1	16.5	17.4	18.1	19.1	21.2	23.9	25.6	26.9	28.8
Age:
8–11 years	1,082	12.1	0.2	7.5	8.1	8.7	9.5	11.7	14.2	15.6	16.7	18.3
12–15 years	1,780	18.1	0.1	13.3	14.3	15.0	16.2	17.9	19.9	21.1	22.1	23.9
16–19 years	1,513	20.0	0.1	15.5	16.3	16.8	17.8	19.7	21.7	23.1	24.3	25.8
20–39 years	2,043	21.7	0.1	16.5	17.5	18.2	19.2	21.1	23.7	25.5	26.7	28.5
40–59 years	2,049	22.5	0.1	17.0	18.0	18.7	19.6	21.9	24.6	26.4	27.8	30.0
60–79 years	1,846	21.3	0.1	16.4	17.3	17.9	18.8	20.8	23.3	24.8	25.9	27.6
80 years and older	594	19.1	0.2	14.9	15.6	16.2	17.1	18.9	20.9	22.1	23.1	24.5
Mexican American:
20 years and older, age adjusted	1,438	21.1	0.1	…	…	…	…	…	…	…	…	…
20 years and older, crude	1,438	21.2	0.1	16.2	17.1	17.8	18.7	20.8	23.4	25.0	26.2	27.6
Age:
8–11 years	342	11.6	0.2	7.4	7.8	8.2	9.1	10.8	13.7	15.2	15.9	17.9
12–15 years	632	17.9	0.2	13.3	14.2	14.8	15.8	17.5	19.8	20.7	22.1	24.0
16–19 years	533	19.3	0.2	14.8	15.6	16.1	16.9	18.7	20.9	22.3	23.3	25.7
20–39 years	492	21.1	0.2	16.0	17.0	17.8	18.6	20.6	23.1	24.8	25.9	27.6
40–59 years	442	22.0	0.2	16.8	17.6	18.2	19.3	21.4	24.2	26.0	26.7	28.4
60–79 years	457	20.5	0.2	15.9	16.8	17.4	18.2	20.3	22.4	23.9	24.7	25.9
80 years and older	47	17.5	0.5	13.5	14.7	15.2	15.8	17.1	18.7	19.4	20.5	†
Non-Hispanic white:
20 years and older, age adjusted	3,250	21.9	0.1	…	…	…	…	…	…	…	…	…
20 years and older, crude	3,250	21.9	0.1	16.9	17.7	18.4	19.3	21.3	23.9	25.6	26.9	28.8
Age:
8–11 years	281	12.2	0.2	7.5	8.3	8.9	9.6	11.8	14.2	15.4	16.5	18.3
12–15 years	448	18.1	0.2	12.8	14.3	14.9	16.2	18.0	19.9	21.0	21.9	23.5
16–19 years	409	20.3	0.2	16.0	16.8	17.3	18.1	19.9	21.9	23.5	24.6	25.8
20–39 years	907	21.9	0.1	17.1	17.9	18.5	19.5	21.2	23.7	25.4	26.6	28.3
40–59 years	964	22.7	0.1	17.3	18.3	18.8	19.8	22.0	24.7	26.6	28.0	30.0
60–79 years	922	21.3	0.1	16.7	17.4	18.0	19.0	20.9	23.2	24.7	25.9	27.6
80 years and older	457	19.2	0.2	15.1	15.7	16.3	17.1	18.9	20.9	22.1	23.1	24.6
Non-Hispanic black:
20 years and older, age adjusted	1,312	22.7	0.1	…	…	…	…	…	…	…	…	…
20 years and older, crude	1,312	22.8	0.1	16.9	18.1	18.8	19.7	22.2	25.2	26.9	28.2	30.4
Age:
8–11 years	373	12.4	0.2	7.5	8.5	9.0	9.8	11.7	14.4	16.4	17.4	18.7
12–15 years	558	18.6	0.2	14.1	15.0	15.6	16.4	18.3	20.5	22.0	22.8	24.5
16–19 years	435	20.4	0.2	15.7	16.3	16.8	17.7	19.7	22.2	23.9	25.3	27.7
20–39 years	455	22.6	0.2	16.7	18.0	18.6	19.5	21.6	25.2	27.2	28.4	30.5
40–59 years	453	23.3	0.2	17.3	18.7	19.2	20.4	22.8	25.5	27.0	28.4	31.0
60–79 years	346	22.6	0.2	17.3	18.2	18.7	19.6	22.4	24.7	26.3	27.6	29.2
80 years and older	58	19.8	0.5	13.9	15.7	16.3	17.5	19.6	21.8	23.2	24.1	25.1

… Category not applicable.

^†Standard error not calculated by SUDAAN.

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