Table 1.
Baseline characteristics of the study population (n = 14,009)
| Variables | MPV (fL) | P value | |||
|---|---|---|---|---|---|
| Q1 < 7.49 |
Q2 7.49–8.43 |
Q3 8.43–9.69 |
Q4 ≥ 9.69 |
||
| Participants | 3513 | 3493 | 3502 | 3501 | |
| Males, % | 44.9 | 45.2 | 41.6 | 39.0 | < 0.001 |
| Age, years | 62.35 (7.58) | 62.44 (7.84) | 62.26 (7.79) | 61.88 (7.85) | 0.015 |
| Education, % | 0.096 | ||||
| Primary or below | 28.5 | 29.1 | 26.2 | 29.8 | |
| Junior high school | 36.7 | 35.8 | 37.6 | 35.8 | |
| High school | 25.8 | 25.1 | 25.4 | 23.9 | |
| College or above | 8.9 | 10.0 | 9.9 | 9.7 | |
| Body mass index, kg/m2 | 24.24 (3.48) | 24.11 (3.31) | 24.06 (3.25) | 24.93 (3.21) | 0.097 |
| Current smoking (yes, %) | 20.0 | 20.7 | 18.8 | 16.7 | < 0.001 |
| Current drinking (yes, %) | 23.9 | 23.6 | 22.7 | 21.0 | 0.015 |
| Physical activity (yes, %) | 88.2 | 87.6 | 89.3 | 89.9 | 0.007 |
| Family history of diabetes (yes, %) | 4.1 | 4.0 | 4.1 | 3.3 | 0.173 |
| Hypertension (yes, %) | 26.2 | 23.9 | 24.5 | 24.4 | 0.270 |
| Hyperlipidemia (yes, %) | 12.9 | 14.1 | 14.4 | 12.9 | 0.220 |
| Incident diabetes (yes, %) | 6.6 | 6.9 | 7.8 | 7.2 | 0.063 |
| Systolic blood pressure (mmHg) | 127.91 (18.39) | 127.42 (18.39) | 126.70 (18.41) | 127.19 (18.69) | 0.054 |
| Diastolic blood pressure (mmHg) | 78.61 (10.84) | 77.49 (10.71) | 76.51 (10.81) | 77.17 (10.84) | < 0.001 |
| Total cholesterol (mmol/L) | 5.19 (0.88) | 5.17 (0.94) | 5.17 (0.93) | 5.12 (0.95) | 0.031 |
| Triglycerides (mmol/L) | 1.34 (0.86) | 1.33 (0.92) | 1.34 (0.97) | 1.37 (0.87) | 0.369 |
| HDL-cholesterol (mmol/L) | 1.44 (0.38) | 1.39 (0.36) | 1.47 (0.40) | 1.54 (0.45) | < 0.001 |
| LDL-cholesterol (mmol/L) | 3.34 (0.79) | 3.09 (0.81) | 3.01 (0.92) | 2.92 (0.77) | < 0.001 |
| Fasting blood glucose (mmol/L) | 5.53 (0.55) | 5.54 (0.54) | 5.54 (0.59) | 5.44 (0.63) | < 0.001 |
| Mean platelet volume, fL | 6.77 (0.54) | 7.95 (0.28) | 9.01 (0.36) | 11.16 (1.49) | < 0.001 |
| Platelet counts, 10E9/L | 200.00 (56.28) | 196.92 (52.89) | 190.00 (53.30) | 173.06 (52.22) | < 0.001 |
| White blood cell count, 10E9/L | 5.70 (1.91) | 5.84 (1.53) | 6.00 (1.54) | 6.01 (1.60) | < 0.001 |
Continuous variables were presented as mean (SD). Dichotomous variables were presented as n (%)