Correlation analyse between thyroid hormone levels and severity of schizophrenia symptoms

Table 3 Comparison of serum thyroid hormone concentrations in each group (mean ± SD)

Grouping	T3 (nmol/L)	T4 (nmol/L)	FT3 (pmol/L)	FT4 (pmol/L)	TSH (mIU/L)	Cortisol (mmol/L)	PANSS
Mild group (n = 39)	1.95 ± 0.63	103.12 ± 17.42	4.29 ± 0.52	13.22 ± 1.80	2.08 ± 0.52	4.95 ± 0.88	68.51 ± 5.77
Moderate group (n = 45)	1.72 ± 0.52	94.13 ± 16.11	4.33 ± 0.58	12.99 ± 2.00a	2.88 ± 0.85a	6.32 ± 1.25a	75.20 ± 6.38a
Severe group (n = 16)	1.50 ± 0.50	85.23 ± 15.20	4.36 ± 0.62	13.32 ± 2.12a,b	3.41 ± 0.99a,b	7.45 ± 1.50a,b	81.88 ± 7.06a,b
t	4.049	9.615	0.102	0.021	20.721	29.743	28.311
P value	0.020	0.003	0.903	0.885	< 0.001	< 0.001	< 0.001

^aP < 0.05, compared with the mild group.

^bP < 0.05, compared with the severe group.

T3: Triiodothyronine; T4: Thyroxine; FT3: Free triiodothyronine; FT4: Free thyroxine; TSH: Thyroid stimulating hormone; PANSS: Positive and Negative Syndrome Scale.