Table 2.

Age group distribution in Cases and Control mothers

Age groups	Cases		Controls
	Nr	%	Nr	%
14 – 19	9	10.1	15	8.4
20 – 24	16	17.9	46	25.8
25 – 29	17	19.1	42	23.5
30 – 34	22	24.8	34	19.6
35 – 39	6	6.7	27	15.1
40 – 44	7	7.8	9	5.1
45 +	2	2.2	4	2.3
No date of birth	10	11.2	1	0.5