TABLE 8.
Men (age 15–44 years): Comparisons of T4 and TSH Values Across 4-level UI/Cr Ranges
| Variable | UI/Cr 0–50 µg/g (n = 480) |
UI/Cr 50.01–100 µg/g (n = 1354) |
UI/Cr 100.01–200 µg/g (n = 1317) |
UI/Cr 200.01+ µg/g (n=620) |
P |
|---|---|---|---|---|---|
| Thyroxine (T4) (µg/dL) | 8.49 ± 0.09 | 8.55 ± 0.05 | 8.52 ± 0.05 | 8.65 ± 0.07 | |
| Med 8.4 | Med 8.5 | Med 8.5 | Med 8.6 | 0.685 | |
| Range 2.7–14.6 | Range 0.4–14.3 | Range 0.4–14.6 | Range 0.4–14.7 | ||
| T4 (nmol/L) | 109.3 ± 1.1 | 110.1 ± 0.61 | 109.7 ± 0.63 | 111.3 ± 0.90 | |
| Med 108.1 | Med 109.4 | Med 109.4 | Med 110.7 | 0.685 | |
| Range 5.1–191.8 | Range 5.1–184.0 | Range 5.1–187.9 | Range 5.1–189.2 | ||
| TSH (µU/mL = mU/L) | GM 1.1 ± 0.03 | GM 1.2 ± 0.01 | GM 1.33 ± 0.02 | GM 1.39 ± 0.02 | |
| Med 1.2 | Med 1.3 | Med 1.3 | Med 1.3 | <0.001 | |
| Range 0.1–4.4 | Range 0.0–4.4 | Range 0.0–4.4 | Range 0.0–4.2 |
Descriptive data are summarized in the format mean ± SE or geometric mean ± SE and median, range (minimum–maximum). Total n = 3771.