TSH and T4 before and after starting treatment with levothyroxine
| Soy diet group (n = 8) | Non-soy diet group (n = 70) | p value | |
|---|---|---|---|
| Normal ranges for T4: 81.1–321.8 nmol/l and TSH: 0.5–5 mU/l. | |||
| Data shown as median (interquartile range). | |||
| Pretreatment TSH (mU/l) | 428 (154–550) | 229 (93–524) | 0.7 |
| First TSH on treatment (mU/l) | 42.6 (30.6–63.1) | 6.6 (1.8–20.9) | <0.01 |
| Pretreatment T4 (nmol/l) | 29.6 (22.5–57.3) | 47.6 (25.1–80.4) | 0.2 |
| First T4 on treatment (nmol/l) | 153 (140–180) | 188 (144–218) | 0.2 |
| Time to TSH <10 (days) | 150 (54–229) | 40 (18.7–189) | 0.02 |
| TSH >10 at 2 months (%) | 62.5 | 35.7 | 0.2 |
| TSH >10 at 4 months (%) | 62.5 | 17 | 0.01 |