Objectives-To assess trends in fertility and infant mortality rates (IMR) i
n Leon, Nicaragua, and to examine the effect of women's education on these
trends during 1964-1993, a period of rapid social change.
Design-Cross sectional survey, based on random cluster sampling. A retrospe
ctive questionnaire on reproductive events was used. Setting-The municipali
ty of Leon, which is the second largest city in Nicaragua, with a total pop
ulation of 195 000 inhabitants.
Subjects-10 867 women aged 15-49 years, corresponding to 176 281 person yea
rs of reproductive life. Their children contributed 22 899 person years und
er 12 months of age to the IMR analysis.
Main outcome measures-Fertility rate (number of pregnancies per 1000 person
years) for specific age groups and calendar periods, total fertility rate,
and IMR.
Results-Fertility rates and LMR declined in parallel, especially during the
1980s. However, education specific fertility rates did not decline, but th
e proportion of educated young women increased from 20% to 46 %. This had a
lso an impact on the overall IMR decline, although LMR reduction mainly too
k place among infants of women without formal education, decreasing from 11
8 to 69 per 1000 during the observation period.
Conclusions-In this demographic transition over three decades, fertility an
d IIR declined simultaneously. The decreasing trend in fertility was mainly
explained by an increase in women's education, while the IMR decline seeme
d to be the result of health interventions, specially targeted to poorer gr
oups of women and their infants. Thus, social differences in fertility rate
s remained unchanged, while equity in chances of child survival increased.