Distribution of CKD by eGFR and ACR among participants aged 40+
| eGFR category* | Albuminuria category† | |||||||||
| Not measured‡ | A1 <30 mg/g | A2 30–300 mg/g | A3 >300 mg/g | Row | ||||||
| N | % (95% CI) | N | % (95% CI) | N | % (95% CI) | N | % (95% CI) | N | % (95% CI) | |
| 2009–2010 | ||||||||||
| G1 (≥90) | 645 | 25.5 (22.6 to 28.6) | 869 | 30.6 (27.7 to 33.6) | 149 | 4.7 (3.7 to 6.0) | 24 | 0.9 (0.4 to 1.8) | 1687 | 61.7 (58.4 to 64.9) |
| G2 (60–89) | 217 | 8.6 (6.5 to 11.1) | 671 | 20.5 (18.1 to 23.1) | 142 | 4.1 (3.1 to 5.4) | 23 | 0.7 (0.4 to 1.2) | 1053 | 33.9 (30.7 to 37.2) |
| G3a (45–59) | 15 | 0.3 (0.1 to 0.8) | 66 | 1.6 (1.0 to 2.6) | 31 | 0.9 (0.5 to 1.6) | 8 | 0.1 (0.0 to 0.3) | 120 | 2.9 (2.1 to 4.1) |
| G3b (30–44) | 8 | 0.2 (0.1 to 0.6) | 23 | 0.5 (0.3 to 0.9) | 11 | 0.2 (0.1 to 0.5) | 5 | 0.1 (0.0 to 0.1) | 47 | 1.0 (0.6 to 1.5) |
| G4 (15–29) | 2 | 0.0 (0.0 to 0.1) | 2 | 0.0 (0.0 to 0.2) | 3 | 0.1 (0.0 to 0.5) | 5 | 0.2 (0.0 to 0.5) | 12 | 0.3 (0.1 to 0.8) |
| G5 (<15) | 2 | 0.2 (0.0 to 0.9) | 0 | – | 0 | – | 2 | 0.0 (0.0 to 0.1) | 4 | 0.2 (0.0 to 0.8) |
| Column N, % (95% CI) | 889 | 34.8 (31.6 to 38.0) | 1631 | 53.3 (50.0 to 56.5) | 336 | 10.1 (8.5 to 11.9) | 67 | 1.9 (1.3 to 2.8) | 2923 | 100 (N/A) |
| 2016–2017 | ||||||||||
| G1 (≥90) | 484 | 17.9 (15.5 to 20.5) | 1294 | 40.2 (37.4 to 43.1) | 167 | 4.8 (3.6 to 6.4) | 16 | 0.4 (0.2 to 0.8) | 1961 | 63.3 (60.3 to 66.1) |
| G2 (60–89) | 196 | 5.2 (4.0 to 6.8) | 866 | 21.3 (19.0 to 23.8) | 164 | 3.8 (3.0 to 4.8) | 26 | 0.6 (0.4 to 1.0) | 1252 | 31.0 (28.3 to 33.9) |
| G3a (45–59) | 19 | 0.4 (0.2 to 0.9) | 107 | 2.3 (1.6 to 3.4) | 36 | 0.8 (0.5 to 1.4) | 14 | 0.3 (0.1 to 0.6) | 176 | 3.8 (2.9 to 4.9) |
| G3b (30–44) | 6 | 0.0 (0.0 to 0.1) | 33 | 0.5 (0.3 to 0.8) | 18 | 0.4 (0.2 to 0.7) | 8 | 0.1 (0.0 to 0.2) | 65 | 1.0 (0.7 to 1.4) |
| G4 (15–29) | 2 | 0.1 (0.0 to 0.7) | 4 | 0.2 (0.1 to 0.7) | 8 | 0.3 (0.1 to 0.8) | 6 | 0.1 (0.0 to 0.6) | 20 | 0.7 (0.4 to 1.4) |
| G5 (<15) | 5 | 0.2 (0.0 to 0.8) | 0 | – | 0 | – | 5 | 0.1 (0.0 to 0.2) | 10 | 0.2 (0.1 to 0.7) |
| Column N, % (95% CI) | 712 | 23.8 (21.1 to 26.7) | 2304 | 64.5 (61.4 to 67.5) | 393 | 10.1 (8.6 to 11.9) | 75 | 1.6 (1.1 to 2.2) | 3484 | 100 (N/A) |
*eGFR (measured in mL/min/1.73 m2) determined by CKD-EPI equation. G1: normal to high eGFR; G2: mildly decreased eGFR; G3a: mildly to moderately decreased; G3b: moderately to severely decreased; G4: severely decreased and G5: kidney failure.
†Albuminuria determined by the urine albumin-creatinine ratio (ACR, measured in mg/g). A1 (normal): <30 mg/g; A2 (moderately increased): 30–300 mg/g; A3 (severely increased): >300 mg/g.
‡Albuminuria not measured as these participants had no diabetes or hypertension.
.ACR, albumin-creatinine ratio; CKD-EPI, Chronic Kidney Disease Epidemiology Collaboration; eGFR, estimated glomerular filtration rate; N/A, not applicable.