Table 2. MDRD-based Glomerular filtration rate by sex and age.
| Mean age (SD), years | Total no. | GFR ≥90 | GFR: 60–89 | GFR: 30–59 | GFR: 15–29 | GFR <15 | |
| All participants | 43.8 (15.8) | 3591 | 1240 (34.5) | 2186 (60.9) | 154 (4.3) | 6 (0.2) | 5 (0.1) |
| Women | 41.2 (15.1) | 2192 | 721 (32.9) | 1367 (62.4) | 99 (4.5) | 4 (0.2) | 1 (0.1) |
| Men | 48.0 (15.9) | 1399 | 519 (37.1) | 819 (58.5) | 55 (3.9) | 2 (0.1) | 4 (0.3) |
| Age (years) | |||||||
| <30 | 23.1 (3.5) | 847 | 647 (76.4) | 194 (22.9) | 4 (0.5) | 1 (0.1) | 1 (0.1) |
| 30–39 | 34.5 (2.8) | 656 | 186 (28.3) | 465 (70.9) | 5 (0.8) | 0 (0.0) | 0 (0.0) |
| 40–49 | 44.4 (3.0) | 634 | 117 (18.4) | 502 (79.2) | 14 (2.2) | 1 (0.2) | 0 (0.0) |
| 50–59 | 54.2 (2.9) | 806 | 184 (22.8) | 593 (73.6) | 26 (3.2) | 2 (0.3) | 1 (0.1) |
| 60–69 | 63.8 (3.0) | 433 | 84 (19.4) | 284 (65.6) | 62 (14.3) | 2 (0.5) | 1 (0.2) |
| ≥70 | 72.5 (2.4) | 215 | 22 (10.2) | 148 (68.8) | 43 (20.0) | 0 (0.0) | 2 (0.9) |
Abbreviations: BMI, body mass index (kg/m2); GFR, glomerular filtration rate (ml/min/1.73 m2); MDRD, Modification of Diet in Renal Disease; SD, standard deviation.
Values are numbers (percentages) of participants unless stated otherwise.