| n% | |
| Age | |
| 3 years | 10(24.4) |
| 4 years | 8(19.5) |
| 5 years | 10(24.4) |
| 6 years | 13(31.7) |
| Sex | |
| Boy | 22(53.7) |
| Girl | 19(46.3) |
| Past blood sampling experiance | |
| Yes | 38(92.7) |
| No | 3(7.3) |
| Illnessesa | |
| Endocrine, nutritional, and metabolic diseases | 9(22.0) |
| Neoplasms | 8(19.5) |
| Diseases of respiratory system | 7(17.1) |
| Diseases of the blood and blood forming organs nad certain disorders | 5(12.2) |
| Injury, poisoning, and certain other consequences of extranal causes | 4(9.8) |
| Diseases of the skin and subcutaneous tissue | 3(7.3) |
| Diseases of the genitourinary system | 2(4.9) |
| Congenital malformations, deformations, and chromosomal abnormalities | 1(2.4) |
| Certain infectious and parasitic diseases | 1(2.4) |
| Unidentified | 1(2.4) |