Table 1 Comparisons of baseline clinical characteristics between patients with and without diabetes.

From: Sleep quality, autonomic dysfunction and renal function in diabetic patients with pre-CKD phase

Variables

Total

Diabetes

Non-diabetes

p

Number

754

231

523

 

Age, years

57.7 ± 0.5

62.1 ± 0.7

55.8 ± 0.6

 < 0.001

Male gender, n (%)

353 (46.8)

130 (56.3)

223 (42.6)

 < 0.001

Body mass index, kg/m2

24.3 ± 0.1

25.5 ± 0.3

23.7 ± 0.2

 < 0.001

Current smoking, n (%)

179 (23.7)

68 (29.4)

111 (21.2)

0.018

Past history of CVD, n (%)

94 (12.5)

45 (19.5)

49 (9.4)

 < 0.001

Systolic BP, mmHg

115.2 ± 1.4

122.7 ± 2.0

111.8 ± 1.8

 < 0.001

Diastolic BP, mmHg

69.0 ± 0.8

72.3 ± 1.2

67.4 ± 1.1

0.016

LDL-cholesterol, mg/dL

110.2 ± 2.0

102.4 ± 3.1

114.4 ± 2.5

 < 0.011

HDL-cholesterol, mg/dL

55.9 ± 0.7

52.6 ± 1.0

57.6 ± 0.9

0.001

Triacylglycerol, mg/dL

129.9 ± 3.6

137.9 ± 7.3

125.6 ± 3.9

0.151

Uric acid, mg/dL

5.4 ± 0.0

5.4 ± 0.1

5.4 ± 0.0

0.590

Blood urea nitrogen, mg/dL

13.7 ± 0.1

14.1 ± 0.3

13.5 ± 0.1

0.066

Creatinine, mg/dL

0.65 ± 0.00

0.64 ± 0.00

0.65 ± 0.00

0.487

Baseline eGFR, ml/min/1.73m2

88.0 ± 0.7

89.8 ± 1.5

87.3 ± 0.8

0.133

Albuminuria, mg/gCr

5.9 (0.0–15.1)

10.2 (0.0–30.3)

4.7 (0.0–11.5)

 < 0.001

Fasting plasma glucose, mg/dL

108.1 ± 1.2

134.1 ± 2.7

94.5 ± 0.6

 < 0.001

HbA1c (%)

5.9 ± 0.0

7.2 ± 0.1

5.2 ± 0.0

 < 0.001

Comorbidities

Hypertension, n (%)

470 (62.3)

166 (71.9)

304 (58.1)

 < 0.001

Dyslipidemia, n (%)

402 (53.3)

154 (66.7)

248 (47.4)

 < 0.001

Anti-hypertensive drugs

Calcium-channel blockers, n (%)

313 (41.5)

103 (44.6)

210 (40.2)

0.289

ACE inhibitor or ARB, n (%)

148 (19.6)

76 (32.9)

72 (13.8)

 < 0.001

α or β blocker, n (%)

84 (11.1)

23 (10.0)

61 (11.7)

0.575

Diuretic agent, n (%)

40 (5.3)

18 (7.8)

22 (4.2)

0.064

Statin, n (%)

193 (25.6)

100 (43.3)

93 (17.8)

 < 0.001

Anti-diabetic drugs

DPP-4 inhibitor, n (%)

79 (34.1)

N/A

GLP-1 analogue, n (%)

12 (5.1)

N/A

Sulfonylurea, n (%)

49 (21.3)

N/A

Thiazolidine, n (%)

18 (3.5)

N/A

Metformin, n (%)

75 (32.5)

N/A

SGLT2 inhibitor, n (%)

2 (0.9)

N/A

Insulin, n (%)

45 (19.6)

N/A

Diabetes duration, years

9.1 ± 0.6

N/A

Diabetic microvascular complications

Neuropathy, n (%)

70 (30.3)

N/A

Retinopathy, n (%)

28 (12.1)

N/A

Nephropathy, n (%)

135 (58.4)

N/A

PSQ, n (%)

102 (13.5)

35 (15.2)

67 (12.8)

0.41

Activity index

30.5 (21.8–42.5)

33.5 (25.4–44.7)

29.7 (20.4–41.1)

0.003

Number

722

225

497

Sleep apnea, n (%)

373 (51.7)

150 (66.6)

223 (44.8)

 < 0.001

REI

5.6 (1.4–12.9)

8.9 (3.2–17.9)

4.0 (0.9–11.0)

 < 0.001

Number

697

213

484

Low HRV, n (%)

348 (49.9)

120 (56.3)

228 (47.1)

0.039

CVRR

13.5 (11.4–16.1)

12.9 (11.2–15.5)

13.7 (11.5–16.3)

0.427

  1. Data are presented as the mean ± standard error or median (25th–75th percentile) for continuous variables or number (%) for dichotomous variables. P values are shown for comparisons of mean (t-test) and median (Mann–Whitney test) values. Percentages were determined with a chi-squared test.
  2. CVD cardiovascular disease, BP blood pressure, LDL low density lipoprotein, HDL high density lipoprotein, eGFR estimated glomerular filtration rate, ACE angiotensin converting enzyme, ARB angiotensin II receptor blocker, DPP dipeptidyl peptidase, GLP glucagon-like peptide, PSQ poor sleep quality, REI respiratory event index, HRV heart rate variability, CVRR coefficient of variation of R–R interval, NA not applicable.