To describe the change in marital status and subsequent live births of
mothers who have lost a baby from sudden infant death (SID or cot dea
th), a postal questionnaire was sent to European mothers who had been
interviewed approximately 3.7 years (range 2.2-5.2 years) previously a
s part of a nationwide case-control study. Mothers of 105 (60.3%) case
s and 828 (76.9%) controls replied. Changes in marital status between
the time of interview and the time of the postal questionnaire did not
differ between mothers of cases and that of controls when adjusted fo
r marital status at the time of death/nominated date for controls. Cas
es were more likely to have further children than controls (P < 0.001)
and had them sooner after the death than after the nominated date for
control babies (P < 0.001). Case mothers were more likely than contro
ls to have a second child after the death/nominated date, however, the
interval between the first and second child after the death/nominated
date was the same as that for controls. Conclusions Although the deat
h of an infant isa major stress on marital relationships, at approxima
tely 3.7 years marital breakdown is no higher than in the control popu
lation. After the death of her baby the mother ''replaces'' the child
by having more children than control mothers and having the first one
earlier than control mothers. Mothers who lose a baby from SID are mor
e fertile than the control population both before and after the death.