Table 2.
Median (interquartile range) values of eGFR (in ml/min per 1.73 m2) and proteinuria (in g/d) by quintile of socioeconomic position
| Parameter | Quintile 1 (Lowest) | Quintile 2 | Quintile 3 | Quintile 4 | Quintile 5 (Highest) | P Valuea |
|---|---|---|---|---|---|---|
| Membranous nephropathy | ||||||
| eGFR | 83 (43–102) | 77 (46–92) | 74 (39–96) | 75 (53–97) | 78 (49–96) | 0.82 |
| Proteinuria | 5.6 (3.3–9.0) | 5.4 (3.6–8.7) | 6.1 (2.8–8.7) | 5.8 (2.9–10.0) | 5.7 (3.0–8.3) | 0.99 |
| IgA nephropathy | ||||||
| eGFR | 56 (35–83) | 52 (27–82) | 54 (30–76) | 58 (36–83) | 57 (33–72) | 0.75 |
| Proteinuria | 1.4 (0.8–3.2) | 1.6 (0.8–3.0) | 1.6 (0.8–3.0) | 1.7 (0.8–2.9) | 1.7 (0.9–3.2) | 0.92 |
| FSGS | ||||||
| eGFR | 45 (22–86) | 47 (24–71) | 47 (22–80) | 33 (22–50) | 42 (28–67) | 0.39 |
| Proteinuria | 3 (1.6–5.6) | 3 (1.1–5.3) | 2.6 (1.3–4.1) | 2.7 (1.3–6.0) | 3 (1.1–6.0) | 0.83 |
| ANCA-related GN | ||||||
| eGFR | 18 (11–32) | 16 (11–25) | 20 (11–34) | 16 (10–31) | 18 (11–32) | 0.61 |
| Proteinuria | 1.2 (0.6–2.3) | 1.2 (0.5–2.0) | 1.4 (0.9–2.4) | 0.9 (0.4–2.1) | 0.9 (0.6–2.2) | 0.23 |
| Lupus nephritis | ||||||
| eGFR | 74 (47–102) | 81 (39–105) | 84 (57–116) | 70 (45–107) | 79 (42–107) | 0.48 |
| Proteinuria | 1.9 (1.0–4.2) | 2.6 (1.5–4.0) | 2.6 (1.1–4.0) | 2.9 (1.4–4.3) | 2.0 (0.9–3.8) | 0.64 |
a
Kruskal–Wallis test for difference across quintiles of socioeconomic position.