Abstract：
PURPOSE:We conducted this study to investigate birth seasonality in rural parts of Iran. METHODS:In this study, patterns of 5,536,262 live births in rural parts of Iran between 1992 and 2007 were studied. Information about birth numbers, environmental factors, and sociocultural status of participants was obtained from previous works. Visually inspecting the seasonal variation of birth, studying its trend using autocorrelation analysis, examining the trend of birth seasonality using the seasonality coefficient, a newly introduced index, studying correlations between birth seasonality and possible associated factors, and analyzing associations between these variables and birth seasonality using multiple regression model were performed in this study. RESULTS:In this study, we showed birth seasonality in rural parts of Iran, with the highest births in the first two seasons, winter and spring, mostly before the year of 2002. Latitude and mean temperature of districts, wealth status of families, education of women, and mothers' ages were associated with birth seasonality. However, latitude, temperature, and mothers' ages lost their associations after adjusting for sociocultural factors in the regression model. CONCLUSIONS:Birth numbers in rural areas of Iran follow a rhythmic seasonal pattern; however, the ordering of seasons changes in the last years of the study period.
journal_name
Ann Epidemioljournal_title
Annals of epidemiologyauthors
Khajavi A,Pishgar F,Parsaeian M,Moghaddam SS,Jeddian A,Bahrami-Taghanaki HR,Jamshidi HR,Naderimagham Sdoi
10.1016/j.annepidem.2016.09.009subject
Has Abstractpub_date
2016-12-01 00:00:00pages
846-852.e3issue
12eissn
1047-2797issn
1873-2585pii
S1047-2797(16)30355-6journal_volume
26pub_type
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journal_title：Annals of epidemiology
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journal_title：Annals of epidemiology
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pub_type： 杂志文章
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pub_type： 杂志文章,评审
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journal_title：Annals of epidemiology
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更新日期：2020-01-01 00:00:00
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journal_title：Annals of epidemiology
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pub_type： 临床试验,杂志文章,多中心研究,随机对照试验
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journal_title：Annals of epidemiology
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更新日期：2013-05-01 00:00:00
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journal_title：Annals of epidemiology
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更新日期：2018-04-01 00:00:00
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更新日期：2005-11-01 00:00:00
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journal_title：Annals of epidemiology
pub_type： 杂志文章
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更新日期：2002-08-01 00:00:00
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journal_title：Annals of epidemiology
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journal_title：Annals of epidemiology
pub_type： 杂志文章
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更新日期：1996-11-01 00:00:00
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更新日期：2001-10-01 00:00:00
