Table 1 Clinical characteristics and islet function indexes of total subjects according to RDW tertiles
I (11.2–12.6%) | II (12.7–13.1%) | III(13.2–21.0%) | χ2 | P | |
|---|---|---|---|---|---|
n | 181 | 190 | 188 | ||
RDW | 12.3 (12.2–12.5)*# | 13 (12.8–13.1)★# | 13.6 (13.3–14.2)★* | 497.518 | < 0.001 |
male(%) | 130 (71.8)# | 115 (60.5) | 98 (52.1)★ | 15.172 | 0.001 |
age (years) | 52 (44–60)*# | 56 (47–65)★# | 61 (51–69)★* | 34.804 | < 0.001 |
duration (years) | 6 (1–10) | 5 (1–10)# | 7.5 (3–12.5)* | 13.103 | 0.001 |
BMI (kg/m2) | 25.65 (23.83–27.58) | 25.82 (23.45–28.03) | 25.33 (22.84–27.51) | 1.590 | 0.452 |
SBP (mmHg) | 130 (120–140) | 127.5 (118–140) | 130 (118–144) | 2.741 | 0.254 |
DBP (mmHg) | 80 (74–88)# | 79 (70–86) | 79 (70–85.5)★ | 8.369 | 0.015 |
AST (mmol/L) | 18 (14–23) | 20 (15–23) | 19 (16–23) | 4.731 | 0.094 |
TG (mmol/L) | 1.84 (1.29–2.88)# | 1.66 (1.09–2.67) | 1.37 (0.99–2.33)★ | 15.902 | < 0.001 |
TCH (mmol/L) | 4.5 (3.92–5.11) | 4.58 (3.89–5.15) | 4.39 (3.81–5.09) | 2.430 | 0.297 |
LDL (mmol/L) | 2.82 (2.35–3.29) | 2.86 (2.47–3.33) | 2.87 (2.43–3.18) | 2.091 | 0.352 |
HDL (mmol/L) | 0.94 (0.76–1.09) | 0.98 (0.79–1.13) | 0.99 (0.82–1.22) | 3.429 | 0.180 |
ALT (mmol/L) | 21 (14–30) | 21 (15–29) | 19 (13.5–28) | 2.148 | 0.342 |
Cr (umol/L) | 79 (63–91) | 79 (63–91) | 79 (65–93) | 0.495 | 0.781 |
SUA (umol/L) | 286 (249–360) | 295 (236–353) | 291 (237.5–364) | 0.150 | 0.928 |
FBG (mmol/L) | 8.88 (7.18–10.65)# | 8.02 (6.67–10.44) | 7.65 (6.14–9.53)★ | 12.001 | 0.002 |
P2hBG (mmol/L) | 18.1 (15.02–20.34) | 17.9 (14.39–21.17) | 16.94 (14.32–20.17) | 3.462 | 0.177 |
HbA1c (%) | 9.4 (7.8–10.7)# | 8.8 (7.6–11.3)# | 8.3 (6.8–10)★* | 11.338 | 0.003 |
FCP (nmol/L) | 0.73 (0.56–0.96) | 0.71 (0.55–0.97) | 0.71 (0.51–0.96) | 0.301 | 0.860 |
P2hCP (nmol/L) | 1.69 (1.18–2.1) | 1.68 (1.25–2.25) | 1.73 (1.24–2.44) | 0.685 | 0.710 |
hypertension(%) | 68 (37.6) | 62 (32.6) | 75 (39.9) | 2.238 | 0.327 |
poor glycemic control(%) | 180 (99.4) | 185 (97.4) | 185 (98.4) | 2.407 | 0.314 |
hyperuricemia(%) | 23 (12.7) | 26 (13.7) | 30 (16.0) | 0.850 | 0.654 |
Islet function indexes | |||||
FCPI | 0.08 (0.06–0.12) | 0.09 (0.06–0.12) | 0.09 (0.06–0.12) | 1.867 | 0.393 |
PPCPI | 0.09 (0.07–0.14) | 0.09 (0.06–0.15) | 0.1 (0.07–0.15) | 1.378 | 0.502 |
ΔC-peptide | 0.91 (0.53–1.29) | 0.91 (0.57–1.42) | 0.96 (0.6–1.41) | 1.592 | 0.451 |
HOMA2%B | 47.1 (32.9–75.4)# | 54.05 (34.1–81) | 57.9 (38.65–95.4)★ | 6.670 | 0.036 |
HOMA2IR | 1.9 (1.45–2.45) | 1.92 (1.41–2.48) | 1.81 (1.33–2.5) | 1.244 | 0.537 |