Thyroid-stimulating hormone levels and suicide attempts in Chinese patients with first-episode drug-naïve major depressive disorder

Table 5 Relationship between free triiodothyronine/free thyroxine levels and suicide attempt in different models

Predictor	Unadjusted OR (95%CI), P value	Model I (age, sex) [OR (95%CI), P value]	Model II (fully adjusted) [OR (95%CI), P value]
Free triiodothyronine (pmol/L)	1.022 (0.869-1.203), 0.790	1.036 (0.879-1.220), 0.673	0.970 (0.801-1.175), 0.758
Free thyroxine (pmol/L)	0.997 (0.959-1.035), 0.858	0.998 (0.960-1.036), 0.903	0.980 (0.938-1.024), 0.360

Normal free triiodothyronine was defined as 3.1-6.8 pmol/L and normal free thyroxine as 10.38-23.21 pmol/L; low free triiodothyronine/free thyroxine was defined as values below the lower limits. Un-adjusted model for: None. Adjust I model for: (1) Age (years); and (2) Sex. Adjust II model for: (1) Age (years); (2) Sex; (3) Hamilton Anxiety Scale; (4) Systolic pressure (mmHg); (5) Diastolic pressure (mmHg); (6) Anti-thyroglobulin (IU/L); (7) Thyroid peroxidase antibody (IU/L); (8) Fasting blood glucose (mmol/L); (9) Total cholesterol (mmol/L); (10) High-density lipoprotein cholesterol (mmol/L); (11) Triglycerides (mmol/L); (12) Low-density lipoprotein cholesterol (mmol/L); and (13) Body mass index (kg/m²). OR: Odds ratio.