Table 1 General characteristics of the subjects
From: Association between shift work and microalbuminuria: data from KNHANES(2012–2014)
Variables | Male | Female | Total | |
|---|---|---|---|---|
Total (Na) | 2094 | 906 | 3000 | |
Age (years) | 20–29 | 148 (12.1%) | 1 (0.3%) | 149 (9.7%) |
30–39 | 404 (22.1%) | 3 (0.2%) | 407 (17.7%) | |
40–49 | 456 (25.7%) | 36 (5.2%) | 492 (21.5%) | |
50–59 | 567 (26.9%) | 401 (50.5%) | 968 (31.7%) | |
≥ 60 | 519 (13.2%) | 465 (43.8%) | 984 (19.4%) | |
Body mass index(kg/m2) | <23 | 740 (36.5%) | 326 (37.7%) | 1066 (36.7%) |
(n = 2988) | 23–25 | 519 (24.8%) | 258 (27.6%) | 777 (25.4%) |
≥25 | 824 (38.7%) | 321 (34.7%) | 1145 (37.9%) | |
Education | ≤ Elementary school | 349 (12.3%) | 485 (50.5%) | 834 (20.0%) |
(n = 2999) | Middle school | 330 (13.9%) | 187 (22.7%) | 517 (15.7%) |
High school | 939 (49.3%) | 200 (22.9%) | 1139 (44.0%) | |
≥ University | 475 (24.5%) | 34 (3.9%) | 509 (20.3%) | |
Household income | Low | 533 (26.9%) | 192 (21.9%) | 725 (25.9%) |
(n = 2979) | Low-middle | 606 (28.8%) | 296 (32.3%) | 902 (29.5%) |
Middle-high | 542 (25.5%) | 241 (26.0%) | 783 (25.6%) | |
High | 397 (18.8%) | 172 (19.8%) | 569 (19.0%) | |
Work pattern | Day-worker | 1653 (80.0%) | 792 (86.8%) | 2445 (81.4%) |
Shift worker | 441 (20.0%) | 114 (13.2%) | 555 (18.6%) | |
Smoking status | Non-smoker | 358 (17.8%) | 843 (94.2%) | 1201 (33.2%) |
(n = 2985) | Ex-smoker | 752 (32.5%) | 24 (2.6%) | 776 (26.5%) |
Current smoker | 977 (49.7%) | 31 (3.2%) | 1008 (40.4%) | |
eavy alcohol drink | Yes | 280 (12.7%) | 8 (1.1%) | 288 (10.4%) |
(n = 2985) | No | 1806 (87.3%) | 891 (98.9%) | 2697 (89.6%) |
History of hypertension | Yes | 682 (28.0%) | 372 (39.3%) | 1054 (30.3%) |
(n = 2987) | No | 1403 (72.0%) | 530 (60.7%) | 1933 (69.7%) |
History of diabetes mellitus | Yes | 235 (9.4%) | 103 (10.5%) | 338 (9.6%) |
(n = 2870) | No | 1775 (90.6%) | 757 (89.5%) | 2532 (90.4%) |
Systolic blood pressure (mmHg) | 119.62 ± 0.39 | 124.08 ± 0.74 | 120.52 ± 0.37 | |
Diastolic blood pressure (mmHg) | 78.99 ± 0.29 | 76.17 ± 0.45 | 78.42 ± 0.26 | |
Fasting blood sugar (mg/dl) | 100.15 ± 0.47 | 99.90 ± 0.93 | 100.10 ± 0.44 | |
Triglyceride (mg/dl) | 162.20 ± 3.40 | 124.10 ± 2.75 | 154.64 ± 2.81 | |
Estimated glomerular filtration rate | 95.28 ± 0.36 | 95.52 ± 0.32 | 95.33 ± 0.30 | |