Table 2 Frequency of sickle cell disease according to sociodemographic characteristics of children and parent’s knowledge of their hemoglobin phenotype

Age classes (yr)

0.532

 < 5

88

5

5.7

2.1–13.4

 5–9

105

4

3.8

1.2–10.0

 10–14

83

7

8.4

3.7–17.1

 15–19

39

3

7.7

2.0–22.0

Sex

0.039

 Female

138

4

2.9

0.9–7.7

 Male

177

15

8.5

7.6–20.6

Parents’ knowledge of their hemoglobin phenotype

0.074

 None

256

13

5.1

2.8–8.7

 One

36

2

5.6

0.9–20.0

 Both

23

4

17.4

5.7–39.5