Table 4. Test results of homogeneity of variances (P values) for each endpoint.

		Serum tT3	Serum tT4	Thyroid/body weight ratio	Follicular epithelium/colloid ratio
Homogeneity of variance	Original data	<0.001a	<0.001a	0.008a	0.001a
	Log-transformed data	0.49	0.17	0.27	0.859