1298
R. C. STEINKAMP, ef al.
to the first variable, the variables entering the equations were not necessarily those
correlating highest with body fat, since the purpose of each variable after the first
was to explain whatthe earlier variables had missed.
TABLE 5, TW0, THREE AND FOUR VARIABLE REGRESSION EQUATIONS AND MULTIPLE CORRELATIONS
BY CATEGORY
Category
ee
ee
White
Number
ot
variables
tees
2
Multiple
.
;
Estimated fat in kg
es
we ee
ee
0.6471LC.C.*
enee i ee eee ee
+0453 ArmS.F.
correlation
with
Measured
er ee
—43.659
ee
ee
males
3
0.498 LCC.
+0.362ArmS.F.
+ 0.435 ThighC.
~ 52.836
25-34 yr
4
0.372 E.C.C.
+0.249 Arm S.F.
+ 0.449 Thigh C.
+ 0.380 Thorax
S.F.
White
2
0.573 Waist C. +0.332 ArmS.F.
males
3
0.362 Waist C.
+0.314 Arm S.F.
+ 0.265 Chest C,
— 41,093
35-44 yr
4
0.381 Waist C.
+0.368 Arm S.F.
+ 0.382 Chest C.
— 0.272 Seapu
White
+0.444 1.C.C.
0.367 Waist C.
+0.351 L.C.C.
+ 0.287 ArmS.F.
— 50.560
—46.791
25-44 yr
4
0.352 Waist C.
+0.395 L.C.C,
+ 0.253 ArmS.F,
~ 0.353 Arm
Length
0.372 L.C.c.
+0.386 Abdomen
0,342 LC.C.
25-44 yr
4
0.333 LC.C.
+0.289 Abdomen
.F,
+0.212 Abdomen
S.F,
S.F,
0.959
~ 51.268
0.918
0.909
0.926
~ 35.689
- 20.462
0.930
0.910
+ 0.242 Thorax
S.F.
+ 0.358 Thorax
—- 19.377
0.914
+ 0.515 Thigh
S.F.
Length
White and
2
0.320 Waist C.
+0.451 LC.C.
— 48.910
Negro males
3
0.307 Waist C.
+0.410 LC.C.
+ 0.169 Arm S.F.
—45,994
25-44 yr
4
0.282 Waist C.
+0.363 LC.C.
+ 0.136 ArmS.F.
+ 0.175 Thorax
S.F,
White
2
14176 ArmC,
-+0.635 Thigh C.
—44,255
females
3
0.861 Arm C.
+0.533 Thigh C.
+ 0.147 Abdomen
- 34,949
25-34 yr
4
0.354 Arm C.
+0.403 Thigh C.
+ 0.159 Abdomen
+ 0.083 Weight
— 39.408
0.920
0.900
9.906
—~ 41.448
0.909
0.913
S.F,
S.F.
0.930
White
2
0.338 Weight
—2.494 Wrist C.
+ 14.046
females
3
0.283 Weight
—2.216 Wrist C.
+ 0.203 ArmS.F,
+12.125
35-44 yr
4
0.300 Weight
~1.855 Wrist C,
+ 0.169 Arm S.F.
— 0.511 Arm
Length
— 26.189
0.937
0.972
0.977
+23.173
0.980
White
2
0.337 Weight
— 3.294 Wrist C,
+24.859
0.946
females
3
0.363 Weight
—2.710 Wrist C.
— 4.050 Biacromial + 49.864
0.963
25-44 yr
4
0.307 Weight
—2.239 Wrist C.
White males
2
0.552 L.C.C,
+ 0.504 Thigh C.
-- 57.266
and females
3
0.377 LEC.
+0.489 Thigh C.
25-34 yr
4
0.380 LC.C.
+0,588 Thigh C,
+ 0.319 Thorax
S.F,
— 0.868 Biacromial + 0.185 ArmS,F.
D.
0.917
+. 0.263 Thorax
— 0,334 Arm
S.F.
Length
2
0.7921L.C.C.
--0.652 BiiliacD.
3
4
0.676 I.C.C,
0.662 I.C.C.
— 0.675 Biiliac D.
— 0.475 Biiliac D.
+ 0.338 Thigh C.
+ 9.342 Thigh C.
White males
and females
2
3
0.562 L.C.C.
0.5421.C.C.
+0.457 Thigh C.
+06.557ThighC.
55,227
— 0.513 Arm
— 39.770
25-44 yr
4
0.515 LC.C.
+0317 Thigh C,
— 0.878 Arm
+ 0.062 Weight
All
subjects
2
3
0.592 1.C.C.
O571LC.C.
+0.360 ThighC.
+0471 ThighC.
— 53.107
— 0.472 Arm
— 39.560
0.489 1.C.C,
+0.439 Thigh C.
-- 0.384 Arm
+ 0.187 Thorax
#LC.C. =ITliac crest circumference. S.F,=Skin foid thickness,
0.970
0.933
White males
:
+39.358
~ 44.904
and females
35—44 yr
4
ke
0.897
0.350 Waist C.
2
in
0.939
0.906
2
3
—~ 45.464
—33.286
3
Negra
fat
0.949
males
males
ae.
— 37.294
—32.813
0.937
0.914
Length
Length
Lengt
Length
-- 39.297
— 0.389 Arm
Length
C.= Circumference.
— 29.836
0.922
0.927
0.914
0.924
— 20.832
0.929
0.905
0.913
S.F,
D.= Diameter.
— 36,165
0.958
__
TABL: