General Error Analysis in the Relationship between Free Thyroxine and Thyrotropin and Its Clinical Relevance

Table 1

Illustration of absolute error [FT4] with different relative errors in [TSH] and different values of 𝜑.

φ	𝑝=1%	𝑝=2%	𝑝=5%
	Δ[FT4] pmol/L	Δ[FT4] pmol/L	Δ[FT4] pmol/L
0.3	0.066	0.13	0.33
0.4	0.05	0.1	0.25
0.5	0.04	0.08	0.2
0.6	0.033	0.07	0.17
0.7	0.028	0.06	0.14
0.8	0.025	0.05	0.13