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Table 3 Clinical characteristics and islet function indexes of male subjects according to RDW tertiles

From: The relationship between red blood cell distribution and islet β-cell function indexes in patients with type 2 diabetes

 

I (11.2–12.6%)

II (12.7–13.1%)

III(13.2–21.0%)

χ2

P

n

130

115

98

  

RDW

12.3 (12.2–12.5)*#

13 (12.8–13.1)★#

13.6 (13.3–14.1)★*

303.536

< 0.001

age (years)

49 (40–59)#

52 (43–63)

55 (49–65)★

16.594

< 0.001

duration (years)

7 (1–10)

4 (0.3–10)#

7 (2–10)*

8.893

0.012

BMI (kg/m2)

26.07 (24.03–28.04)#

26.17 (23.7–28.34)

25.16 (22.34–26.93)★

7.548

0.023

SBP (mmHg)

130 (120–140)

126 (117–139)

130 (116–140)

1.612

0.447

DBP (mmHg)

80 (76–90)

80 (74–86)

80 (71–88)

3.389

0.184

AST (mmol/L)

18 (14–24)

19 (15–22)

20 (17–23)

4.945

0.084

TG (mmol/L)

2 (1.31–3.21)#

1.64 (1.15–2.89)

1.32 (0.95–2.5)★

12.766

0.002

TCH (mmol/L)

4.52 (3.91–5.16)

4.52 (3.8–5.02)

4.42 (3.78–5.1)

0.426

0.808

LDL (mmol/L)

2.82 (2.29–3.19)

2.87 (2.43–3.29)

2.88 (2.58–3.18)

1.532

0.465

HDL (mmol/L)

0.92 (0.74–1.02)#

0.95 (0.77–1.1)

0.98 (0.83–1.16)★

7.984

0.018

ALT (mmol/L)

22 (15–34)

20 (15–30)

22 (15–33)

0.836

0.658

Cr (umol/L)

82.5 (70–94)

85 (74–98)

82.5 (73–97)

1.535

0.464

SUA (umol/L)

306 (260–370)

306 (250–369)

331 (270–387)

2.539

0.281

FBG (mmol/L)

8.82 (7.14–10.62)

8.02 (6.63–10.44)

7.6 (6.24–10.21)

4.391

0.111

P2hBG (mmol/L)

17.73 (15.02–20.18)

17.31 (14.29–20.91)

16.44 (14.19–19.65)

2.351

0.309

HbA1c (%)

9.1 (7.7–10.6)

8.8 (7.7–11.2)

8.3 (6.9–10.4)

3.063

0.216

hypertension(%)

52 (40.0)

37 (32.2)

39 (39.8)

1.958

0.376

poor glycemic control(%)

129 (99.2)

113 (98.3)

96 (98.0)

0.950

0.741

hyperuricemia(%)

17 (13.1)

16 (13.9)

15 (15.3)

0.232

0.891

Islet function indexes

 FCP (nmol/L)

0.74 (0.58–1.03)

0.71 (0.54–0.99)

0.7 (0.54–0.97)

0.923

0.630

 P2hCP (nmol/L)

1.7 (1.26–2.19)

1.72 (1.22–2.28)

1.65 (1.22–2.25)

0.107

0.948

 FCPI

0.09 (0.06–0.12)

0.09 (0.06–0.12)

0.09 (0.07–0.12)

0.102

0.950

 PPCPI

0.1 (0.07–0.14)

0.09 (0.06–0.15)

0.09 (0.07–0.15)

0.210

0.900

 ΔC-peptide

0.91 (0.53–1.34)

0.91 (0.53–1.45)

0.93 (0.56–1.31)

0.194

0.908

 HOMA2%B

49.65 (33.5–79.5)

51.2 (34.5–84.1)

57.9 (38.3–88.9)

1.070

0.586

 HOMA2IR

1.92 (1.47–2.68)

1.91 (1.33–2.51)

1.8 (1.37–2.46)

1.425

0.490

  1. Data are represented as number (percentage) or median (range 25th–75th percentile).★P < 0.05 vs. tertile 1; *P < 0.05, vs. tertile 2; #P < 0.05 vs. tertile 3
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