Interactions of Consanguinity and Number of Siblings with Childhood Acute Lymphoblastic Leukemia

Table 1

Characteristics of children with ALL in Syria.

Characteristic	Count ()	Percentage (%)
Age
0–4	70	36.3
5–9	94	48.7
10–14	29	15
Missing	0
Gender
Male	119	61.7
Female	74	38.3
Missing	9
Place of living
Damascus, Rif-Dimashq, and Aleppo	60	32.3
Homs and Hama	41	22
Al-Jazira region	49	26.3
Southern Syria	18	9.6
Syrian coast	8	4.4
Idlib	10	5.4
Missing	7
Mother education level
Low	88	56.4
Medium	52	33.3
High	16	10.3
Missing	37
Father education level
Low	86	53.8
Medium	47	29.4
High	27	16.9
Missing	33
Consanguinity
No	123	63.7
Third degree	58	30.1
Fourth degree	12	6.2
Missing	0