Table 1.

Profiles of the three categories of patients enrolled in this study

Categorya	n (male)	Age range at study in years	Median latest L-T4b dose (range)	Total number of FT3 and FT4 measurementsc	Mean TSHd level (range)
Control	129 (81)	3.1–17.1	Not applicable	129	2.16 ± 1.03 (0.56–4.96)
A/Hypoplasia	22 (11)	3.0–18.4	125 (25–200)	156	1.81 ± 1.19 (0.30–4.96)
Central	27 (13)	3.0–18.9	100 (50–200)	366	Not applicable

^aSee text for the definition of each category

^bL-T4: L-thyroxine, in μg per day

^cThese numbers represent all the individual FT3 and FT4 measurements taken before averages were calculated. In A/Hypoplasia and Central, the values exceed the number of patients owing to repetitive measurements

^dValues are μIU/mL; mean ± standard deviation