Clinical characteristics of the study subjects according to sleep duration.

The values are expressed as the mean ± SD or the percentage.Abbreviations: BMI, body mass index; HbA1c, hemoglobin A1c; OHA, oral hypoglycemic agent; RAS, renin-angiotensin system; eGFR, estimated glomerular filtration rate.Obesity was defined as BMI ≥30 kg/m2. Hypertension was defined as systolic blood pressure ≥140 mmHg or diastolic blood pressure ≥90 mmHg or the current use of antihypertensive agents.所有数值均以均值±标准差（mean ± SD）或百分比形式表示。缩写说明：BMI（body mass index，体重指数）；HbA1c（hemoglobin A1c，糖化血红蛋白A1c）；OHA（oral hypoglycemic agent，口服降糖药）；RAS（renin-angiotensin system，肾素-血管紧张素系统）；eGFR（estimated glomerular filtration rate，估算肾小球滤过率）。肥胖定义为BMI≥30 kg/m²。高血压定义为收缩压≥140 mmHg、舒张压≥90 mmHg，或当前正在使用降压药物。