Table 1 Hierarchy of blood donations by gender and blood group types
Level | Type of series | Number of series |
|---|---|---|
Level 0 | Total blood donations | 1 |
Level 1 | Blood by gender | 2 (Male and Female) |
Level 2 | Blood type | 4 (A, B, AB, O) |
Level | Type of series | Number of series |
|---|---|---|
Level 0 | Total blood donations | 1 |
Level 1 | Blood by gender | 2 (Male and Female) |
Level 2 | Blood type | 4 (A, B, AB, O) |