Table S1.
Distribution of anemia and its parameters among different stages of chronic kidney disease in mixed race South Africans
| Stage I | Stage II | Stage IIIa | Stage IIIb | Stage IV | Stage V | Total (n=258) | P-value | |
|---|---|---|---|---|---|---|---|---|
| Anemia status, n (%) | ||||||||
| Anaemic | 0 (0.0) | 3 (100) | 2 (66.7) | 2 (50.0) | 4 (80.0) | 0 (0.0) | 11 (55.0) | 0.063 |
| Non-anemic | 1 (100.0) | 0 (0.0) | 1 (37.3) | 2 (50.0) | 1 (20.0) | 4 (100.0) | 9 (45.0%) | |
| Hb (g/dL), mean ± SD | 12.5±0.57 | 14.3±0.51 | 12.1±2.8 | 11.7±0.8 | 12.9±2.7 | 10.0±1.64 | 12.2±2.2 | 0.155a |
| MCV (fL), mean ± SD | 90.4±0.42 | 90.6±0.15 | 91.5±7.4 | 84.8±10.7 | 90.0±5.9 | 91.2±3.1 | 89.6±6.1 | 0.23a |
| MCH (pg), mean ± SD | 32.1±0.7 | 29.3±0.4 | 29.1±1.8 | 27.0±4.7 | 29.7±2.6 | 27.5±1.8 | 28.9±2.8 | 0.33a |
| MCHC, mean ± SD | 30.7±1.2 | 32.4±1.0 | 31.7±1.5 | 31.8±3.0 | 32.5±1.2 | 31.3±1.2 | 31.8±1.7 | 0.394a |
| CRP (mg/L), mean ± SD | 10.0±0.0 | 10.0±0.0 | 18±13.9 | 18±14.7 | 15.8±8.6 | 17.5±6.8 | 15.5±9.1 | 0.179a |
| CRP groups, n (%) | ||||||||
| Inflammation (CRP ≥10) | 0 (0.0) | 0 (0.0) | 1 (33.3) | 2 (50.0) | 2 (40.0) | 3 (75.0) | 8 (36.1) | 0.496b |
| No inflammation (CRP <10) | 2 (100.0) | 3 (100.0) | 2 (66.7) | 2 (50.0) | 3 (60.0) | 1 (25.0) | 13 (61.9) |
Notes:
a
ANOVA;
b
Fisher’s exact test;
c
Pearson’s chi-squared test.
Abbreviations: CRP, C-reactive protein; MCH, mean corpuscular hemoglobin; MCHC, mean corpuscular hemoglobin concentration; MCV, mean corpuscular volume.