Table 2.
Baseline characteristics of participants by level of body mass index.
| Variable | Distribution of Body Mass Index | |||||
|---|---|---|---|---|---|---|
| <18.5 (n = 190,346) |
18.5~23 (n = 1,360,230) |
23~25 (n = 634,091) |
25~30 (n = 729,510) |
30~ (n = 116,707) |
p | |
| Age | 29.62 ± 4.93 | 31.29 ± 4.94 | 32.41 ± 4.62 | 32.83 ± 4.39 | 32.24 ± 4.46 | <0.0001 |
| Age grade | <0.0001 | |||||
| 20 s | 101,396 (53.27) | 529,544 (38.93) | 184,564 (29.11) | 181,446 (24.87) | 33,714 (28.89) | |
| 30 s | 88,950 (46.73) | 830,686 (61.07) | 449,527 (70.89) | 548,064 (75.13) | 82,993 (71.11) | |
| Sex(male) | 49,380 (25.94) | 735,330 (54.06) | 512,593 (80.84) | 636,587 (87.26) | 96,589 (82.76) | |
| Smoking | <0.0001 | |||||
| None | 144,387 (75.86) | 815,922 (59.98) | 270,571 (42.67) | 261,484 (35.84) | 42,818 (36.69) | |
| Ex- | 8700 (4.57) | 130,974 (9.63) | 100,467 (15.84) | 121,109 (16.6) | 16,136 (13.83) | |
| Current | 37,259 (19.57) | 413,334 (30.39) | 263,053 (41.49) | 346,917 (47.55) | 57,753 (49.49) | |
| Drinking | <0.0001 | |||||
| None | 982,92 (51.64) | 556,799 (40.93) | 195,454 (30.82) | 203,834 (27.94) | 36,666 (31.42) | |
| Mild | 85,661 (45) | 715,325 (52.59) | 371,661 (58.61) | 428,251 (58.7) | 63,465 (54.38) | |
| Heavy * | 6393 (3.36) | 88,106 (6.48) | 66,976 (10.56) | 97,425 (13.35) | 16,576 (14.2) | |
| Exercise ** | 12,970 (6.81) | 170,635 (12.54) | 105,304 (16.61) | 123,655 (16.95) | 19,059 (16.33) | <0.0001 |
| Income *** | 30,047 (15.79) | 212,947 (15.66) | 89,929 (14.18) | 99,164 (13.59) | 18,124 (15.53) | <0.0001 |
| DM | 1270 (0.67) | 13,856 (1.02) | 11,239 (1.77) | 23,600 (3.24) | 8347 (7.15) | <0.0001 |
| DM vintage | 0.62 ± 1.8 | 0.86 ± 2.01 | 0.91 ± 1.97 | 0.91 ± 1.9 | 0.91 ± 1.82 | <0.0001 |
| HTN | 4911 (2.58) | 62,781 (4.62) | 54,608 (8.61) | 110,487 (15.15) | 35,531 (30.44) | <0.0001 |
| Dyslipid | 3279 (1.72) | 49,198 (3.62) | 50,609 (7.98) | 95 982 (13.16) | 21,898 (18.76) | <0.0001 |
| Weight (kg) | 47.82 ± 4.88 | 59.05 ± 7.41 | 69.96 ± 6.5 | 79.18 ± 7.75 | 94.21 ± 9.71 | <0.0001 |
| Height(cm) | 164.54 ± 7.51 | 167.52 ± 8.34 | 170.69 ± 7.67 | 171.63 ± 7.26 | 171.33 ± 7.69 | <0.0001 |
| WC (cm) | 65.05 ± 5.07 | 72.97 ± 6.1 | 80.7 ± 5.14 | 87.04 ± 5.81 | 97.38 ± 7.35 | <0.0001 |
| BMI | 17.62 ± 0.73 | 20.96 ± 1.25 | 23.96 ± 0.57 | 26.83 ± 1.32 | 32.05 ± 2 | <0.0001 |
| SBP(mmHg) | 110.26 ± 11.23 | 115.02 ± 11.83 | 120.11 ± 11.83 | 123.98 ± 12.28 | 129.77 ± 13.7 | <0.0001 |
| DBP(mmHg) | 69.5 ± 8.2 | 72.1 ± 8.58 | 75.27 ± 8.67 | 77.96 ± 9.06 | 82.01 ± 10.05 | <0.0001 |
| PP(mmHg) | 40.76 ± 7.53 | 42.92 ± 7.88 | 44.85 ± 8.11 | 46.01 ± 8.32 | 47.76 ± 8.97 | <0.0001 |
| Glu(mg/dL) | 87.29 ± 11.5 | 89.02 ± 12.78 | 91.58 ± 15.1 | 94.21 ± 18.18 | 98.68 ± 24.84 | <0.0001 |
| TC (mg/dL) | 171.49 ± 28.02 | 178.74 ± 30.52 | 189.91 ± 33.27 | 198.62 ± 35.09 | 205.16 ± 36.52 | <0.0001 |
| CCI | 0.33 ± 0.65 | 0.3 ± 0.64 | 0.31 ± 0.65 | 0.33 ± 0.7 | 0.41 ± 0.81 | <0.0001 |
| CCI grade | <0.0001 | |||||
| 0 | 142,556 (74.89) | 1,040,172 (76.47) | 486,174 (76.67) | 550,174 (75.42) | 84,340 (72.27) | |
| 1 | 37,173 (19.53) | 251,251 (18.47) | 114,780 (18.1) | 135,796 (18.61) | 22 901 (19.62) | |
| 2 | 8 170 (4.29) | 51,861 (3.81) | 24,345 (3.84) | 30,488 (4.18) | 5996 (5.14) | |
| 3 | 2447 (1.29) | 16,946 (1.25) | 8 792 (1.39) | 13,052 (1.79) | 3 470 (2.97) | |
| **** GFR | 99.86 ± 49.19 | 97.33 ± 49.08 | 95.34 ± 53.58 | 94.43 ± 54.21 | 94.85 ± 49.75 | <0.0001 |
| CKD event | 179 (0.09) | 1 854 (0.14) | 1235 (0.19) | 2107 (0.29) | 478 (0.41) | <0.0001 |
Abbreviations. DM, diabetes mellitus; HTN, hypertension; WC, waist circumference; BMI, body mass index; SBP, systolic blood pressure; DBP diastolic blood pressure; PP, pulse pressure; TC, total cholesterol; GFR, glomerular filtration rate (mL/min/1.73 m2); CCI, Charlson Comorbidity Index; CKD, chronic kidney disease. * Alcohol consumptions ≥30 g/day, ** Regular exercise: mid-term exercise ≥5 days or vigorous exercise ≥3 days in a week, *** low income 25%, **** GFR: mL/min/1.73 m2.