| 
 
   |  | Control | P Group | PD group | PR group | PRD group | R group | RD group | VitD group |  
   | RBCs (X106/μl) | 9.3 ± 2.1 | 8.7 ± 1.1 | 9 ± 0.9 | 7.9 ± 0.6a,c | 9.15 ± 0.8b,d | 7.25 ± 0.45a,b,c,e | 9.3 ± 0.9d,f | 8.9 ± 0.5d,f |  
   | Hb (g/dL) | 15.5 ± 1.07 | 14.9 ± 0.7 | 15.2 ± 0.8 | 13.1 ± 0.5a,b,c | 15.54 ± 0.5d | 12.6 ± 1a,b,c,e | 14.9 ± 0.6d,f | 15.1 ± 0.8d,f |  
   | PCV (%) | 46.4 ± 7.1 | 42.3 ± 3.1 | 43.1 ± 1.4 | 41.9 ± 1.3 | 45.1 ± 0.6 | 42.1 ± 2.7 | 42.9 ± 1.3 | 44.9 ± 1.8 |  
   | MCV (fL) | 61 ± 3.5 | 62.7 ± 3.3 | 62.1 ± 0.8 | 61.1 ± 2.9 | 59.2 ± 3.6 | 64.3 ± 4.2 | 59.5 ± 1.6 | 61.3 ± 1.8 |  
   | MCH (pg) | 17.6 ± 0.9 | 17.8 ± 0.9 | 17.7 ± 0.4 | 17.5 ± 0.7 | 17.1 ± 0.6 | 17.6 ± 0.7 | 17.4 ± 0.5 | 17.4 ± 0.7 |  
   | MCHC (pg/dL) | 34.7 ± 1 | 33.8 ± 0.5 | 35.9 ± 0.6a,b | 34.5 ± 1c | 36.8 ± 1a,b,d | 34.4 ± 0.9c,e | 35.8 ± 0.6a,b,d,f | 34 ± 0.8c,e,g |  
   | Serum EPO (ng/mL) | 2.3 ± 0.8 | 1.92 ± 0.3 | 2.9 ± 0.8a,b | 0.63 ± 0.15a,b,c | 1.9 ± 0.6c,d | 0.7 ± 0.4a,b,c,e | 2.1 ± 0.9c,d,f | 2.9 ± 0.4a,b,d,e,f,g |  
   | Kidney EPO (ng/mL) | 4.9 ± 0.7 | 4.2 ± 0.4 | 6.1 ± 1.1a,b | 2 ± 0.6a,b,c | 4.4 ± 0.8c,d | 2.3 ± 0.7a,b,c,e | 4 ± 1.1c,d,f | 5.8 ± 1a,b,d,e,f,g |  |