Table 5.

Subgroup analysis of the associations between AKI and the thyroid hormone.

	Crude Model		Model Ⅰ		Model ⅠⅠ		P for interaction
	OR(95%CI)	P-value	OR(95%CI)	P-value	OR(95%CI)	P-value
TT3 (nmol/L)							<0.01*
Normal TSH	0.04 (0.004, 0.45)	<0.01*	0.04 (0.004, 0.55)	0.02*	0.001 (0.001, 0.16)	<0.01*
Lower TSH	46.95 (0.61, 3632.43)	0.08	203.57(1.12, 36874.33)	0.06	150.69 (0.29, 77935.173)	0.12
FT3 (pmol/L)							0.01*
Normal TSH	0.43(0.18, 0.99)	0.05	0.57 (0.23, 1.38)	0.21	0.22 (0.05, 1.07)	0.06
Lower TSH	1.86(0.56, 6.20)	0.31	2.22 (0.61, 8.00)	0.22	1.79 (0.24, 13.42)	0.57
TT4 (nmol/L)							0.67
Normal TSH	0.98 (0.95, 1.00)	0.10	0.98 (0.96, 1.01)	0.28	0.97 (0.93, 1.01)	0.14
Lower TSH	0.99 (0.96, 1.04)	0.84	0.99 (0.95, 1.04)	0.63	0.95 (0.87, 1.04)	0.27
FT4 (pmol/L)							0.20
Normal TSH	1.00 (0.81, 1.23)	0.99	0.99(0.79, 1.23)	0.89	1.08 (0.79, 1.49)	0.62
Lower TSH	0.93 (0.69, 1.26)	0.65	0.95(0.69, 1.31)	0.74	0.76 (0.47, 1.23)	0.26

Crude model adjusted for: None.

Model I adjusted for: sex; age (years); body mass index (kg/m²).

Model II adjusted for: sex; age (years); body mass index (kg/m²); platelet (G/L); Hematocrit (%); creatinine (μmol/L); intraoperative transfusion of packed red blood cell (u); aortic cross-clamping time (min); circulatory arrest time (min).

*P value indicates significance at P < 0.05.