Table 1. Baseline characteristics of participants according to the quartile groups of fasting blood glucose levels (N = 19,050).
| Characteristic | Overall | Fasting blood glucose level | ||||
|---|---|---|---|---|---|---|
| Quartile 1(<88, n = 4,726) | Quartile 2(≥88, <97, n = 4,961) | Quartile 3(≥97, <109, n = 4,709) | Quartile 4(≥109, n = 4,654) | P-for trend* | ||
| Person-year (total) | 82,276.8 | 20,541.9 | 21,528.3 | 20,417.2 | 19,789.4 | |
| Person-year (average) | 4.32 ± (0.69) | 4.35 ± (0.65) | 4.34 ± (0.65) | 4.33 ± (0.65) | 4.25 ± (0.79) | <0.001 |
| Age (years) | 64.5 ± (10.1) | 64.0 ± (10.5) | 64.1 ± (10.3) | 64.5 ± (10.1) | 65.5 ± (9.6) | <0.001 |
| Gender | <0.001 | |||||
| Male (%) | 12,312 (64.6) | 2,823 (59.7) | 3,024 (60.9) | 3,153 (67.0) | 3,312 (71.2) | |
| Female (%) | 6,738 (35.4) | 1,903 (40.3) | 1,937 (39.1) | 1,556 (33.0) | 1,342 (28.8) | |
| BMI (kg/m2) | 23.9 ± (3.0) | 23.5 ± (2.9) | 23.8 ± (2.9) | 24.1 ± (3.0) | 24.5 ± (3.2) | <0.001 |
| Systolic BP (mmHg) | 127.5 ± (15.8) | 125.2 ± (15.6) | 126.5 ± (15.5) | 127.9 ± (15.7) | 130.4 ± (15.9) | <0.001 |
| Diastolic BP (mmHg) | 78.0 ± (9.9) | 76.7 ± (9.8) | 77.6 ± (9.8) | 78.5 ± (9.9) | 79.3 ± (10.0) | <0.001 |
| Total cholesterol (mg/dL) | 195.3 ± (38.0) | 192.4 ± (36.9) | 195.7 ± (36.7) | 197.9 ± (38.0) | 195.2 ± (40.2) | <0.001 |
| Triglyceride (mg/dL) | 120 (85–172) | 109.5 (79–153) | 115 (83–163) | 123 (83–176) | 137 (97–201) | <0.001 |
| HDL-cholesterol (mg/dL) | 54.0 ± (33.5) | 54.7 ± (29.3) | 56.0 ± (38.1) | 55.5 ± (35.4) | 52.9 ± (30.3) | 0.012 |
| LDL-cholesterol (mg/dL) | 113.9 ± (38.3) | 113.7 ± (38.0) | 115.4 ± (37.7) | 115.9 ± (38.1) | 110.7 ± (39.2) | 0.001 |
| SCr (mg/dL) | 1.16 ± (1.39) | 1.10 ± (1.27) | 1.15 ± (1.42) | 1.20 ± (1.49) | 1.20 ± (1.40) | <0.001 |
| eGFR (mL/min per 1.73m2) | 76.3 ± (19.9) | 78.0 ± (19.7) | 76.9 ± (19.5) | 75.8 ± (20.2) | 74.5 ± (20.1) | <0.001 |
| AST (U/L) | 24 (20–30) | 24 (20–29) | 24 (20–29) | 24 (20–30) | 25 (20–33) | <0.001 |
| ALT (U/L) | 21 (16–29) | 19 (15–26) | 20 (15–27) | 21 (16–29) | 24 (17–34) | <0.001 |
| GGT (U/L) | 26 (18–45) | 23 (16–37) | 24 (17–39) | 27 (18–46) | 33 (21–60) | <0.001 |
| Smoking amount (pack-year) | 11.6 ± (18.6) | 10.6 ± (17.8) | 10.2± (17.3) | 12.0 ± (18.9) | 13.8 ± (20.2) | <0.001 |
| Alcohol intake (%) | 18.7 | 14.3 | 16.2 | 20.3 | 24.2 | <0.001 |
| Physical activity (%) | 13.0 | 11.7 | 13.2 | 13.3 | 14.0 | <0.001 |
| Presence of DM (%) | 3914 (20.6) | 513 (10.8) | 564 (11.4) | 751 (15.9) | 2086 (44.8) | <0.001 |
| Development of pancreatic cancer (%) | 381 (2.00) | 63 (1.33) | 92 (1.85) | 94 (2.00) | 132 (2.84) | <0.001 |
Data are means (standard deviation), medians (interquartile range), or percentages.
*P-value by ANOVA-test for continuous variables and Chi square test for categorical variables.