TY - JOUR
T1 - Interpregnancy interval and low birth weight
T2 - Findings from a case-control study
AU - Ferraz, Elenice M.
AU - Gray, Ronald H.
AU - Fleming, Patricia L.
AU - Maia, Tarcisio M.
N1 - Funding Information:
Supported by grant 3-P-84-0004 from International Development Research Centre of Canada.
PY - 1988/11
Y1 - 1988/11
N2 - In a case-control study in Natal, northeast Brazil, conducted between September 1984 and February 1986, 303 cases of intrauterine growth retardation and 282 cases of preterm delivery were compared with 1,710 normal controls to ascertain the effects of the preceding birth-to-conception interval on pregnancy outcome. The risk of intrauterine growth retardation associated with interpregnancy intervals of six months or less was 1.38 (95% confidence Interval (Cl): 1.02-1.86) after adjustment for maternal age, education, smoking, and prior fetal loss or low birth weight When maternal postpartum body weight was introduced into the logistic model, the risk of intrauterine growth retardation decreased slightly to 1.25 and was no longer significant (95% Cl: 0.91-1.72). Short interpregnancy intervals (six months or less) were more frequently observed in women with postpartum body weight of less than 45 kg (31.1%) than in women weighing 50 kg or more (18.9%), which might suggest that the effect of short intervals on the risk of intrauterine growth retardation is mediated through maternal nutritional status. No association was found between birth-to-conception intervals and preterm delivery.
AB - In a case-control study in Natal, northeast Brazil, conducted between September 1984 and February 1986, 303 cases of intrauterine growth retardation and 282 cases of preterm delivery were compared with 1,710 normal controls to ascertain the effects of the preceding birth-to-conception interval on pregnancy outcome. The risk of intrauterine growth retardation associated with interpregnancy intervals of six months or less was 1.38 (95% confidence Interval (Cl): 1.02-1.86) after adjustment for maternal age, education, smoking, and prior fetal loss or low birth weight When maternal postpartum body weight was introduced into the logistic model, the risk of intrauterine growth retardation decreased slightly to 1.25 and was no longer significant (95% Cl: 0.91-1.72). Short interpregnancy intervals (six months or less) were more frequently observed in women with postpartum body weight of less than 45 kg (31.1%) than in women weighing 50 kg or more (18.9%), which might suggest that the effect of short intervals on the risk of intrauterine growth retardation is mediated through maternal nutritional status. No association was found between birth-to-conception intervals and preterm delivery.
KW - Birth intervals
KW - Birth weight
KW - Fetal growth retardation
KW - Infant
KW - Premature
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U2 - 10.1093/oxfordjournals.aje.a115053
DO - 10.1093/oxfordjournals.aje.a115053
M3 - Article
C2 - 3189284
AN - SCOPUS:0023756083
SN - 0002-9262
VL - 128
SP - 1111
EP - 1116
JO - American journal of epidemiology
JF - American journal of epidemiology
IS - 5
ER -