it is demonstrated in simulations that , if adjustment for inequality in body weight is to be made by covariance analysis and the comparison is carried out in terms of adjusted means of organ weights thus obtained , the test of significance for an organ weight change can be unbiased , or the chances for detecting spurious effects on organ weights remain at about 5 % and the chances for detecting treatment effects are far above the 5 % irrespective of differences in body weight .
C0005910
body
C0005911
differences