Table 1.
Baseline characteristics of the study population by DSC status
| Characteristics | No DSC N (%) | DSC N (%) |
|---|---|---|
| Age-group (years) | ||
| All | 26,549 (100) | 1,262 (100) |
| 18–29 | 1 (0.0) | 0 (0.0) |
| 30–39 | 50 (0.2) | 6 (0.5) |
| 40–49 | 1,051 (4.0) | 83 (6.6) |
| 50–59 | 7,189 (27.1) | 238 (18.9) |
| 60–69 | 10,173 (38.3) | 460 (36.5) |
| 70–79 | 5,773 (21.7) | 354 (28.1) |
| ≥80 | 2,312 (8.7) | 121 (9.6) |
| Sex | ||
| Female | 11,919 (44.9) | 631 (50.0) |
| Male | 14,630 (55.1) | 631 (50.0) |
| Smoking at baseline | ||
| Current | 4,128 (15.5) | 196 (15.5) |
| Ex-smoker | 9,518 (35.9) | 435 (34.5) |
| Never | 11,808 (44.5) | 565 (44.8) |
| Unknown | 1,095 (4.1) | 66 (5.2) |
| Body mass index (kg/m2) at baseline | ||
| <18.5 | 110 (0.4) | 4 (0.3) |
| 18.5–24.9 | 4,328 (16.3) | 194 (15.4) |
| 25.0–29.9 | 9,136 (34.4) | 389 (30.8) |
| ≥30 | 11,470 (43.2) | 602 (47.7) |
| Unknown | 1,505 (5.7) | 73 (5.8) |
| eGFR (mL/min per 1.73 m2) at or prior to baseline | ||
| 75–89 | 19,064 (71.8) | 712 (56.4) |
| 60–74 | 4,029 (15.2) | 288 (22.8) |
| 45–59 | 2,362 (8.9) | 161 (12.8) |
| 30–44 | 929 (3.5) | 83 (6.6) |
| 15–29 | 154 (0.6) | 17 (1.3) |
| <15 | 11 (0.0) | 1 (0.1) |
| UACR (mg/g) at or prior to baseline | ||
| <30 | 6,381 (78.7) | 184 (50.3) |
| 30–299 | 1,490 (18.4) | 99 (27.0) |
| 300–1,999 | 219 (2.7) | 63 (17.2) |
| ≥2,000 | 14 (0.2) | 20 (5.5) |
| Follow-up time after baseline | ||
| ≥3 years | 20,085 (75.7) | 1,130 (89.5) |
Abbreviations: DSC, doubling of serum creatinine; eGFR, estimated glomerular filtration rate; UACR, urine albumin-to-creatinine ratio.