| Parameters | Beginning of the study | Mean | SD Extreme | ||
| D0: Hb (g/dl) | 6.52 | 2.93 | [1.3 - 15.2] | ||
| MCV (fl) | 107.04 | 11.36 | [81 - 131] | ||
| MCTH | 34.4 | 5.04 | [22 - 42.06] | ||
| PLT (G/L) | 148.31 | 487.44 | [170 - 488] | ||
| WBC (G/L) | 4.39 | 2.17 | [1.5 - 15.10] | ||
| Ret. count (G/L) | 30.89 | 29.24 | [2 - 98] | ||
| According to the route of administration of vitamin B12 | p¥ | ||||
|
| Intramuscular (N = 52) | (n) Mean SD | Oral (N = 14) | (n) Mean SD |
|
| D0: Hb (g/dl) | (52) 6.55 | 3.12 | (14) 6.52 | 2.18 | 0.43 |
| MCV (fl) | 106.06 | 11.76 | 110.66 | 9.21 | 0.09 |
| Ret. count (G/L) | 55.26 | 29.78 | 49.29 | 28.74 | 0.37 |
| D8: Hb (g/dl) | (52) 8.69 | 2.49 | (14) 8.85 | 1.9 | 0.83 |
| MCV (fl) | 100.03 | 10.72 | 99.53 | 8.51 | 0.89 |
| Ret. count(G/L) | 104.65 | 102.78 | 145.52 | 87.39 | 0.27 |
| M1: Hb (g/dl) | (41) 10.83 | 2.23 | (12) 11.81 | 1.16 | 0.16 |
| MCV (fl) | 94.0 | 13.34 | 90.91 | 6.81 | 0.18 |
| Ret. count(G/L) | 149.58 | 130.70 | 212.21 | 79.71 | 0.22 |
| M6: Hb (g/dl) | (23) 12.71 | 1.89 | (12) 13.33 | 1.02 | 0.96 |
| MCV (fl) | 86.02 | 8.60 | 86.14 | 8.28 | 0.97 |
| Ret count (G/L) | 213.76 | 102.32 | 297.00 | 54.76 | 0.04 |