The Centers for Disease Control (CDC) published data on the body dimensions of pediatric patients in 2000. This included data on the body weight for boys aged from 2 to 20 years.
Equations derived in JMP
predicted weight in kilograms =
= (A * ((age in months)^3)) + (B * ((age in months)^2)) + (C * (age in months)) + D
NOTE: The tables should be validated prior to clinical use.
|
interval in months |
percentile |
((age)^3) |
((age)^2) |
(age) |
constant |
|---|---|---|---|---|---|
|
24 – 150.5 |
3rd |
0.0000035 |
-0.000418 |
0.1416497 |
7.0740917 |
|
|
5th |
0.000004 |
-0.000476 |
0.147606 |
7.2036801 |
|
|
10th |
0.0000046 |
-0.00056 |
0.1570807 |
7.4044498 |
|
|
25th |
0.0000057 |
-0.000679 |
0.17265 |
7.7902917 |
|
|
50th |
0.0000068 |
-0.000743 |
0.1889743 |
8.2737884 |
|
|
75th |
0.0000071 |
-0.000559 |
0.1928398 |
9.0438059 |
|
|
90th |
0.0000059 |
0.0000594 |
0.1715722 |
10.218592 |
|
|
95th |
0.0000036 |
0.0008551 |
0.1334074 |
11.408102 |
|
|
97th |
0.000001 |
0.0016636 |
0.0907238 |
12.514789 |
|
150.5 – 198.5 |
3rd |
-0.000048 |
0.0254669 |
-4.108668 |
237.13647 |
|
|
5th |
-0.000049 |
0.025429 |
-4.059408 |
232.80988 |
|
|
10th |
-0.000048 |
0.0248619 |
-3.89584 |
221.25859 |
|
|
25th |
-0.000047 |
0.0238723 |
-3.610978 |
201.52285 |
|
|
50th |
-0.000046 |
0.0224395 |
-3.233855 |
176.78401 |
|
|
75th |
-0.000039 |
0.0187724 |
-2.481238 |
132.36289 |
|
|
90th |
-0.00003 |
0.0137969 |
-1.550326 |
81.372526 |
|
|
95th |
-0.000023 |
0.0102975 |
-0.9416 |
51.028431 |
|
|
97th |
-0.000017 |
0.007065 |
-0.407315 |
25.356994 |
|
198.5 - 240 |
3rd |
0 |
-0.002952 |
1.4456261 |
-122.9086 |
|
|
5th |
0 |
-0.002848 |
1.4028815 |
-117.0247 |
|
|
10th |
0 |
-0.002675 |
1.332276 |
-107.2607 |
|
|
25th |
0 |
-0.002423 |
1.2309473 |
-92.26801 |
|
|
50th |
0 |
-0.002226 |
1.1559326 |
-78.64068 |
|
|
75th |
0 |
-0.002254 |
1.1804525 |
-74.36415 |
|
|
90th |
0.0000531 |
-0.037564 |
9.0007627 |
-641.7257 |
|
|
95th |
0.0000689 |
-0.048521 |
11.53453 |
-829.6555 |
|
|
97th |
0.0000821 |
-0.057809 |
13.699509 |
-992.0937 |
