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Epidemiology and Health 2018;e2018008.
DOI: https://doi.org/10.4178/epih.e2018008    [Accepted] Published online March 13, 2018.
The effects of water pipe smoking on birthweight: A population-based prospective cohort ‎study in the south of Iran
Shahrzad Nematollahi1  , MohammadAli Mansournia1  , Abbas Rahimi-Foroushani1  , Mahmood Mahmoodi1  , Azin Alavi2  , Mohammad Shekari3  , Kourosh Holakouie-Naieni1 
1Department of Epidemiology and Biostatistics, School of Public health, Tehran University of ‎Medical Sciences, Tehran, Iran
2Department of obstetrics and gynecology, School of medicine, Hormozgan University of ‎Medical Sciences, Bandar Abbas, Iran
3Department of Medical Genetics, School of medicine, ‎Hormozgan University of Medical Sciences, Bandar Abbas, Iran
Correspondence  Kourosh Holakouie-Naieni ,Tel: +98-9136560762, Fax: 88989127, Email: holakoik@hotmail.com
Submitted: February 21, 2018  Accepted after revision: March 13, 2018
Consecutive community health assessments revealed that water pipe smoking in ‎women as well as child impaired growth are amongst the main health concerns of the ‎suburban communities in south of Iran. The aim of the present study was to identify the ‎effects of water pipe smoking during pregnancy on birthweight of the infant.‎
The data of a population-based prospective cohort study in 714 singleton live ‎pregnancies in the suburbs of Bandar Abbas, south of Iran in 2016-2018 were used in this ‎study. Data about the water pipe smoking pattern and birth weight were collected by ‎questionnaires during and after the pregnancy. Low Birth Weight (LBW) was defined as ‎birthweight below 2500 grams. Analyses were performed by GLM statistical modelling and ‎the results were presented using the Relative Risk (RR) and 95% confidence intervals.‎
Fifty (8.2%) of the study subjects smoked water pipe. The adjusted risk of LBW ‎increased by two times in water pipe smokers (Adjusted RR (ARR) =2.09, 95%CI: 1.18-‎‎3.71), and by 2% for each one-year increase in the duration of water pipe smoking ‎‎(ARR=1.02, 95%CI: 0.99-1.05).‎
Our results showed that water pipe smoking during pregnancy is an important risk factor for LBW in ‎the south of Iran. Introduction of regulations to monitor water pipe smoking and implementation of ‎community health action plans aiming at empowerment of women and increasing knowledge and ‎attitude of women regarding water pipe health consequences are proposed. ‎ ‎‎
Keywords: Low birth weight‎; Water pipe smoking‎; Prospective study‎; Suburban population
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