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Table 4 Clinical characteristics and islet function indexes of female 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

51

79

90

  

RDW

12.4 (12.2–12.5)*#

13 (12.8–13.1)★#

13.7 (13.4–14.3)★*

188.296

< 0.001

age (years)

56 (51–62)#

61 (54–66)

64 (53–71)★

11.575

0.003

duration (years)

6 (1–10)

5 (2–10)

8 (3–13)

5.192

0.075

BMI (kg/m2)

24.91 (22.41–26.45)

25.48 (22.52–27.73)

25.6 (23.61–28.2)

3.530

0.171

SBP (mmHg)

130 (120–140)

129 (118–140)

130 (118–146)

1.345

0.511

DBP (mmHg)

78 (70–86)

76 (70–82)

76 (70–81)

2.030

0.362

AST (mmol/L)

18 (14–22)

21 (15–25)

18.5 (15–23)

4.334

0.115

TG (mmol/L)

1.58 (1.15–2.5)

1.67 (0.96–2.3)

1.46 (1.01–2.13)

1.712

0.425

TCH (mmol/L)

4.36 (3.98–5.1)

4.66 (4.08–5.71)

4.35 (3.84–5.03)

4.834

0.089

LDL (mmol/L)

2.84 (2.46–3.32)

2.86 (2.61–3.45)

2.86 (2.35–3.18)

1.954

0.376

HDL (mmol/L)

1.07 (0.89–1.35)

1.01 (0.87–1.17)

1 (0.78–1.27)

2.048

0.359

ALT (mmol/L)

17 (14–26)

21 (15–28)#

17 (12–25)*

6.930

0.031

Cr (umol/L)

62 (55–73)

65 (53–79)

74 (58–85)

6.754

0.034

SUA (umol/L)

260 (221–281)

280 (217–318)

258.5 (221–302)

1.328

0.515

FBG (mmol/L)

9.36 (7.42–11.83)#

8.03 (6.7–11.3)

7.7 (5.69–9.28)★

9.464

0.009

P2hBG (mmol/L)

18.59 (14.73–20.79)

18.12 (14.39–21.53)

17.49 (14.49–20.48)

1.958

0.376

HbA1c (%)

9.8 (8–11.2)#

8.95 (7.6–11.6)#

8.4 (6.8–9.8)★*

10.045

0.007

hypertension(%)

16 (31.4)

25 (33.3)

36 (40.0)

1.325

0.516

poor glycemic control(%)

51 (100.0)

72 (96.0)

89 (98.9)

2.316

0.358

hyperuricemia(%)

6 (11.8)

10 (13.3)

15 (16.7)

0.733

0.693

Islet function indexes

FCP (nmol/L)

0.7 (0.49–0.85)

0.7 (0.56–0.92)

0.71 (0.49–0.95)

1.595

0.450

P2hCP (nmol/L)

1.65 (1.1–1.98)

1.67 (1.26–2.24)

1.84 (1.32–2.51)

2.714

0.257

FCPI

0.07 (0.05–0.12)

0.09 (0.06–0.12)

0.1 (0.06–0.13)

5.122

0.077

PPCPI

0.08 (0.05–0.14)

0.09 (0.07–0.16)

0.1 (0.07–0.16)

2.650

0.266

ΔC-peptide

0.9 (0.55–1.22)

0.91 (0.62–1.4)

1.01 (0.66–1.5)

2.816

0.245

HOMA%2B

39.6 (28–66.2)#

54.3 (31.7–79.7)

58.0 (40.3–97.4)★

8.797

0.012

HOMA2IR

1.85 (1.31–2.25)

1.94 (1.44–2.45)

1.81 (1.31–2.53)

1.165

0.559

  1. Notes: 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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