Table 1.
Characteristics of the study participants by case–control status.
| Impaired kidney function, eGFR (MDRD) |
p-value | ||
|---|---|---|---|
| Cases (<60 ml/min/1.73 m2) | Controls (≥60 ml/min/1.73 m2) | ||
| n | 421 | 4394 | |
| Age, years | 58.7 ± 10.4 | 47 ± 14 | <0.01 |
| Male sex, % | 37 | 63 | 0.08 |
| Body mass index, kg/m2 | 26.6 ± 4.8 | 26.1 ± 5.7 | 0.12 |
| Smoking, % | <0.01 | ||
| Current | 2 | 4 | |
| Former | 14 | 12 | |
| Never | 84 | 84 | |
| Type 2 diabetes, % | 70.1 | 43.5 | <0.01 |
| Hypertension, % | 73.5 | 48.2 | <0.01 |
| Albumin, g/l | 53 ± 13 | 43 ± 6 | <0.01 |
| Creatinine, μmol/l | 150.1 ± 70.7 | 70.7 ± 17.6 | <0.01 |
| eGFR (MDRD), ml/min/1.73 m2 | 48.0 ± 10.7 | 107.4 ± 34.5 | <0.01 |
| eGFR (CKD-EPI), ml/min/1.73 m2 | 45.5 ± 10.7 | 103.0 ± 24.5 | <0.01 |
| HDL, mmol/l | 1.3 ± 0.6 | 1.2 ± 0.4 | <0.01 |
| LDL, mmol/l | 4.4 ± 1.6 | 3.2 ± 1.1 | <0.01 |
| Triglyceride, mmol/l | 1.7 ± 0.7 | 1.1 ± 0.7 | <0.01 |
Values are means ± SD or percentages.