Table 1

Family history, parental details, perinatal events, and early life events: responses in cases and controls

	Cases (n=31)	Controls (n=117)	OR (95% CI)	p Value
The denominator in the case and control columns indicates the number of respondents who answered the question.
CI, confidence interval; OR, odds ratio.
Family events
Is your mother alive?	21/31	69/116	1.6 (0.6 to 4.3)	0.35
Is your father alive?	15/30	45/112	1.5 (0.6 to 3.8)	0.4
Did your father smoke?	22/30	89/110	0.7 (0.3 to 1.8)	0.44
Did your mother smoke?	14/30	64/113	0.7 (0.3 to 1.7)	0.48
Mother take medicines during pregnancy?	5/24	8/76	2.8 (0.8 to 10.0)	0.11
Mother had miscarriages?	6/29	30/98	0.7 (0.2 to 1.8)	0.4
Maternal pregnancy problems?	5/27	22/96	0.9 (0.3 to 2.6)	0.79
Family history kidney problems?	5/30	17/114	1.0 (0.3 to 3.1)	0.94
Family history fits/epilepsy?	6/30	20/114	1.2 (0.4 to 3.4)	0.74
Family history learning difficulties?	4/30	10/114	1.4 (0.4 to 4.9)	0.64
Has anyone in the family got fibroids?	10/29	14/109	4.2 (1.4 to 12.9)	0.01
Are you an only child?	9/31	11/116	4.3 (1.5 to 11.8)	0.005
Early life events
Did you take medicines as a child? (<12 years)	8/31	7/115	5.9 (1.7 to 19.9)	0.004
Were you a healthy child?	25/31	112/117	0.3 (0.1 to 0.9)	0.03
Did you have measles?	26/30	82/99	2.3 (0.5 to 11.4)	0.3
Did you have mumps?	17/29	54/115	1.2 (0.5 to 11.4)	0.72
Did you have whooping cough?	7/28	28/101	1.1 (0.4 to 3.6)	0.84
Did you have chicken pox?	28/30	98/108	0.9 (0.2 to 4.3)	0.84
Did you have rubella?	16/27	61/88	0.8 (0.3 to 2.1)	0.63
Other childhood illnesses?	15/31	45/114	1.5 (0.7 to 3.3)	0.31
Any drugs in adolescence?	4/30	9/115	1.6 (0.4 to 5.9)	0.48
Any childhood operations?	12/31	28/115	2.4 (0.9 to 6.2)	0.09