Table 1.

The basic characteristics in 2012 according to eGFR/proteinuria status

CharacteristicseGFR<60 ml/min per 1.73 m2 or Proteinuria >300 mg/dlP Value
NoYes
N10,449591
Age, yr53.4±10.958.4±11.7<0.001
Overall sleep quality score<37840 (75.0%)425 (71.9%)0.01
3–52479 (23.7%)151 (25.6%)
>5130 (1.24%)15 (2.54%)
Athens Insomnia Scale score<69372 (89.7%)514 (87.0%)0.04
≥61077 (10.3%)77 (13.0%)
The Epworth Sleepiness Scale score<1010257 (98.2%)567 (95.9%)<0.001
≥10192 (1.80%)24 (4.10%)
Sleep duration<6 h/d1342 (12.8%)76 (12.9%)0.007
6–7 h/d2220 (21.3%)105 (17.8%)
7–8 h/d1850 (17.7%)85 (14.4%)
≥8 h/d5037 (48.2%)325 (54.9%)
SnoringNo6243 (59.8%)353 (59.7%)0.82
Occasional2507 (23.9%)137 (23.2%)
Frequent1699 (16.3%)101 (17.1%)
Use of sleep medicationYes1107 (10.6%)61 (10.3%)0.83
Education levelPrimary school560 (5.40%)51 (8.60%)<0.001
High school8909 (85.3%)511 (86.5%)
College980 (9.30%)29 (4.90%)
Income level, RMB/mo<6002352 (22.5%)146 (24.7%)<0.001
600–10007422 (71.0%)348 (58.9%)
>1000675 (6.5%)97 (16.4%)
OccupationWhite collar697 (6.7%)41 (6.9%)0.25
Blue collar5309 (50.8%)319 (54.0%)
Coalminer4443 (42.5%)231 (39.1%)
Physical activity, >20 min each timeNever5110 (48.9%)212 (35.9%)<0.001
<4 times/wk3766 (36.0%)280 (47.4%)
≥4 times/wk1573 (15.1%)99 (16.8%)
Smoking statusNever5614 (53.7%)330 (55.8%)0.04
Past smoker637 (6.1%)48 (8.20%)
Current smoker4198 (40.2%)213 (36.0%)
Alcohol consumptionNever6003 (57.5%)365 (61.8%)0.11
Past drinker3216 (30.8%)167 (28.3%)
Current drinker1230 (11.8%)59 (9.9%)
Myocardial infarction historyYes123 (1.18%)8 (1.35%)0.69
Stroke historyYes229 (2.19%)24 (4.06%)0.003
CancerYes21 (0.20%)1 (0.17%)0.87
HypertensionNo1753 (16.8%)28 (4.74%)<0.001
Prehypertension3869 (37.0%)165 (27.9%)
Yes4827 (46.2%)398 (67.3%)
DiabetesNo6882 (65.9%)293 (49.6%)0.03
Prediabetes2437 (23.3%)144 (23.4%)
Yes1130 (10.8%)154 (26.0%)
Body mass index, kg/m225.0±3.3625.9±3.47<0.001
LDL cholesterol, mmol/L2.10±1.092.41±1.13<0.001
HDL cholesterol, mmol/L1.41±0.681.40±0.650.59
Triglyceride, mmol/L1.73±1.072.26±2.05<0.001
  • Continuous variables were reported as means±SD. Categorical variables were reported as N (%).