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

Table 4 Previous ⁽¹⁾ and subsequent ⁽²⁾ inter-gestational interval (days) between pregnancy 1–2 for MWNH ⁽³⁾ by proband gender.

Notes: ⁽¹⁾ Previous-calculated from second-born probands. ⁽²⁾ Subsequent- calculated from first-born probands. ⁽³⁾ MWNH = mothers with no history of spontaneous abortion. Cases with stillbirths were excluded from the analysis.

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