A reproductive history of mothers with spina bifida offspring-a new look at old issues

Table 7 Selected characteristics of mothers by history of spontaneous abortion

Characteristic	Measure	MWNH ⁽¹⁾ N = 202	MWH ⁽²⁾ N = 66	p value
White race (Caucasian)	Percent	86.1	90.9	n.s. ⁽³⁾
Number of pregnancies	Mean	2.61	3.94	< 0.001
Number of live births	Mean	2.61	2.52	n.s.
Age at proband's birth	Mean years	25.27	24.91	n.s.
Age at interview	Mean years	44.22	41.31	n.s.

Notes: ⁽¹⁾ MWNH = mothers with no history of spontaneous abortion. ⁽²⁾ MWH = mothers with history of spontaneous abortion. Cases with stillbirths excluded from the analysis. ⁽³⁾ Fisher exact p value calculated on cell frequencies (not shown).

ISSN: 2045-8118