Table 3.
Prevalence (%) and adjusted Odd Ratios (OR) for presenting high TSH, low FT4 and low FT3 in the study. Individuals according to their Ferritin levels (<30 vs ≥30 µg/L).
| Total number | Number (%) | Adjusted OR | 95% CI | p | Number (%) | Adjusted OR | 95% CI | p | ||
|---|---|---|---|---|---|---|---|---|---|---|
| TSH ≥ 4.7 µUI/mL (p95) | TSH ≥ 5.8 µUI/mL (p97.5) | |||||||||
| Ferritin (µg/L) | ≥30 | 2769 | 135 (4.9) | 1 | 68 (2.5) | 1 | ||||
| <30 | 1077 | 57 (5.3) | 0.8 | (0.6–1.2) | 0.348 | 28 (2.6) | 0.9 | (0.5–1.5) | 0.676 | |
| FT4 < 12.0 pmol/L (p5) | FT4 < 11.5 pmol/L (p2.5) | |||||||||
| Ferritin (µg/L) | ≥30 | 2769 | 117 (4.2) | 1 | 52 (1.9) | 1 | ||||
| <30 | 1075 | 73 (6.8) | 1.5 | (1.1–2.2) | 0.024 | 41 (3.8) | 1.7 | (1.0–2.7) | 0.044 | |
| FT3 < 3.9 pmol/L (p5) | FT3 < 3.8 pmol/L (p2.5) | |||||||||
| Ferritin (µg/L) | ≥30 | 2768 | 111 (4.0) | 1 | 52 (1.9) | 1 | ||||
| <30 | 1074 | 76 (7.1) | 1.8 | (1.3–2.6) | 0.001 | 41 (3.8) | 2.0 | (1.2–3.3) | 0.007 | |
Adjusted ORs were calculated by logistic regression adjusted to age, sex, UI, BMI and smoking status.