Table 1

Initial clinical characteristics of the patients with and without iron deficiency anaemia (IDA)

IDA
(n = 63)
Non-IDA (n = 28)
Sex
Male4115
 Female2213
Median age at onset (months)1714
Frequency of spells/month
< 103217
 10–30166
 > 30155
Type of attack
Cyanotic4218
 Pallid63
 Mixed157
Consanguinity53
Positive family history81