Table 2.

Odds ratios (95% CI) of MReGFR for 1 mIU/L increase of TSH or 1 unit of TSH index, PTFQI, or FT3/FT4 ratio

	eGFR <90 mL/min/1.73 m2	p value
TSH (increase of 1 mIU/L)	1.22 (1.01–1.48)	0.042
TSH index (increase of 1 unit)	1.49 (1.01–2.21)	0.044
PTFQI (increase of 1 unit)	3.22 (1.20–8.65)	0.020
FT3/FT4 ratio	0.18 (0.02–1.74)	0.138

p value adjusted for centers, age, and prepubertal stage.

PTFQI, parametric thyroid feedback quantile-based index; MReGFR, mild reduced estimated glomerular filtration rate.

MReGFR was defined by an eGFR value ≥60 and <90 mL/min/1.73 m².