Association between Physiological Equivalent Temperature (PET) with adverse pregnancy outcomes in Ahvaz, southwest of Iran
Open Access
- 4 June 2021
- journal article
- research article
- Published by Springer Science and Business Media LLC in BMC Pregnancy and Childbirth
- Vol. 21 (1), 1-10
- https://doi.org/10.1186/s12884-021-03876-5
Abstract
Background: There are few epidemiological studies on the relation between temperature changes and adverse pregnancy outcomes. The purpose of this study was to determine the relation between Physiological Equivalent Temperature (PET) with adverse pregnancy outcomes including stillbirth, low birth weight (LBW), preterm labor (PTL), spontaneous abortion (SA), preeclampsia and hypertension in Ahvaz, Iran. Methods: Distributed Lag Non-linear Models (DLNM) combined with quasi-Poisson regression were used to investigate the effect of PET on adverse pregnancy outcomes. In this study the effect of time trend, air pollutants (NO2, SO2 and PM10), and weekdays were adjusted. Results: High PET (45.4 C°, lag = 0) caused a significant increase in risk of stillbirth. Also, high levels of PET (45.4, 43.6, 42.5 C°, lag = 0–6) and low levels of PET (9.9, 16.9 C°, lags = 0, 0–13, 0–21) significantly increased the risk of LBW. But, low levels of PET (6.4, 9.9, 16.9 C°, lags = 0–6, 0–13) reduced the risk of gestational hypertension. Conclusion: The results of this study showed that hot and cold thermal stress may be associated with increased risk of stillbirth, and LBW in Ahvaz.Funding Information
- Ahvaz Jundishapur University of Medical Sciences (U-98107)
This publication has 67 references indexed in Scilit:
- Lagged Effect of Diurnal Temperature Range on Mortality in a Subtropical Megacity of ChinaPLOS ONE, 2013
- Maternal Exposure to Ambient Temperature and the Risks of Preterm Birth and Stillbirth in Brisbane, AustraliaAmerican Journal of Epidemiology, 2011
- Comparison of UTCI to selected thermal indicesInternational Journal of Biometeorology, 2011
- Influence de la variation saisonnière sur la prévalence de la pré-éclampsie à KinshasaGynécologie Obstétrique & Fertilité, 2011
- A Large Change in Temperature between Neighbouring Days Increases the Risk of MortalityPLOS ONE, 2011
- A Nested Case-Control Study of Midgestation Vitamin D Deficiency and Risk of Severe PreeclampsiaJournal of Clinical Endocrinology & Metabolism, 2010
- Distributed lag non‐linear modelsStatistics in Medicine, 2010
- Meeting Report: Atmospheric Pollution and Human ReproductionEnvironmental Health Perspectives, 2008
- The heat shock protein 70 family: Highly homologous proteins with overlapping and distinct functionsFEBS Letters, 2007
- Deaths from heat-stroke in Japan: 1968–1994International Journal of Biometeorology, 1999