Table 3.

Relationship between sleep characteristics and renal function parameters in patients with diabetic kidney disease.

Parameter	log UACR			log eGFR
	r	95% CI	p value	r	95% CI	p value
log ESS	0.184	0.045–0.316	0.010	–	–	–
log AHI	0.681	0.602–0.747	< 0.001	–0.402	− 0.509 to − 0.283	< 0.001
log ODI	0.595	0.499–0.676	< 0.001	− 0.398	− 0.507 to − 0.277	< 0.001
log lowest SaO2, %	− 0.304	− 0.424 to − 0.174	< 0.001	0.226	0.091–0.352	0.001

Variables are log transformed and data recorded are Spearman’s correlation coefficient, 95% confidence interval of the correlation and p value.

UACR urinary albumin–creatinine ratio, eGFR estimated glomerular filtration rate, ESS Epworth sleepiness scale, AHI apnea–hypopnea index, ODI desaturation index, SaO₂ oxygen saturation.