کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
3444322 1595258 2014 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Cold ambient temperature in utero and birth outcomes in Uppsala, Sweden, 1915–1929
موضوعات مرتبط
علوم پزشکی و سلامت پزشکی و دندانپزشکی پزشکی و دندانپزشکی (عمومی)
پیش نمایش صفحه اول مقاله
Cold ambient temperature in utero and birth outcomes in Uppsala, Sweden, 1915–1929
چکیده انگلیسی

PurposeAlthough the literature reports adverse birth outcomes following ambient heat, less work focuses on cold. We, moreover, know of no studies of cold that examine stillbirth. We tested the relation between cold ambient temperature during pregnancy in Sweden and four outcomes: stillbirth, preterm, birth weight for gestational age, and birth length. We examined births from 1915 to 1929 in Uppsala, Sweden, which—unlike most societies today—experienced substandard indoor-heating and fewer amenities to provide shelter from cold.MethodsWe retrieved data on almost 14,000 deliveries from the Uppsala Birth Cohort Study. We linked a validated, daily ambient temperature series to all pregnancies and applied Cox proportional hazards (stillbirth and preterm) and linear regression models (birth weight and length). We tested for nonlinearity using quadratic splines.ResultsThe risk of stillbirth rose as ambient temperature during pregnancy fell (hazard ratio for a 1°C decrease in temperature, 1.08; 95% confidence interval, 1.00 to 1.17). Cold extremes adversely affected preterm and birth length, whereas warm extremes increased preterm risk. We observed no relation between cold and birth weight for gestational age.ConclusionIn historical Sweden, cold temperatures during pregnancy increased stillbirth and preterm risk and reduced birth length among live births.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Annals of Epidemiology - Volume 24, Issue 2, February 2014, Pages 116–121
نویسندگان
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