Need help with fitting data with an existing varaible

[gx2144]

Hi, I had a series of functions that I obtained from previous studies and I wanted to apply these functions to my data. And I also wanted to test if these functions fit our data. Could anyone give some hints on the coding ?

Appreciated.

[PaigeMiller]

"Functions" is somewhat vague. Can you be specific?

And I also wanted to test if these functions fit our data.

Again, please be specific about what you mean by "test if these functions fit our data".

[gx2144]

The equations were:

R5 (KPa/L/s) = −3.841167 × logHeight + 8.671580;

R20 (KPa/L/s) = −2.546561 × logHeight + 5.841867;

X5 (KPa/L/s) = −0.000097 × Age + 1.018597 × logHeight − 2.343672.

I had a data set that contains these variables(height, age, R5,R20,X5) and I wanted to apply these functions on my data set. And I wanted to see if these equations fit my data.

If this makes sense to you.

[PaigeMiller · Accepted solution]

Okay, here's some untested code using the natural logarithm (base e) of the value of Height

data want;
    set have;
    R5  = −3.841167 * log(Height) + 8.671580;
    R20 = −2.546561 * log(Height) + 5.841867;
    X5 = −0.000097 * Age + 1.018597 * log(Height) − 2.343672;
run;