| Year | Subjects Number | hemoglobin grouping | total | |
| anemia | normal | |||
| 2012 | 589 | 46 (7.8) | 543 (92.2) | 589 |
| 2013 | 1033 | 65 (6.3) | 968 (93.7) | 1033 |
| Total | 1622 | 111 (6.84) | 1320 (92.57) | 1622 |