Table 1
Initial clinical characteristics of the patients with and without iron deficiency anaemia (IDA)
IDA
(n = 63)
Non-IDA (n = 28
)
Sex
Male
41
15
Female
22
13
Median age at onset (months)
17
14
Frequency of spells/month
< 10
32
17
10–30
16
6
> 30
15
5
Type of attack
Cyanotic
42
18
Pallid
6
3
Mixed
15
7
Consanguinity
5
3
Positive family history
8
1