نتایج جستجو برای: fertility factors

تعداد نتایج: 1120813  

Journal: :Human reproduction 2008
Laura Bunting Jacky Boivin

BACKGROUND Previous research has highlighted a lack of fertility awareness in the general population especially in relation to the optimal fertile period during the menstrual cycle, incidence of infertility and duration of the reproductive life span. The current study assessed fertility knowledge more broadly in young people and investigated three areas of knowledge, namely risk factors associa...

2010
Emily McDonald Evens Sian Curtis Herbert Peterson Ilene Speizer Merry-K Moos

EMILY McDONALD EVENS: Conceptualizing and Testing a New Measure of Fertility Intentions: A Mixed Methods Exploration of Factors that Affect the Achievement of Childbearing Plans (Under the direction of Sian Curtis and Herbert Peterson) Understanding fertility intentions is crucial for reproductive health research and programs. While quantitative research has identified factors associated with f...

Journal: :Health transition review : the cultural, social, and behavioural determinants of health 1996
Barkat-e-Khuda M B Hossain

Bangladesh has undergone a considerable decline in fertility, despite the absence of conditions believed to be necessary for such reproductive changes. Indeed, Bangladesh is the only one among the world's twenty poorest countries where such a change has occurred. The paper examines the nature of fertility transition in Bangladesh, looks at the trends in contraceptive use and fertility, and iden...

Journal: :Korea journal of population and development 1990
S H Chung

The objective of this study is to examine the socioeconomic and intervening determinants of fertility control in Korea. The conceptual framework applied here is based on the synthesis framework of fertility control developed by Easterlin and Crimmins. The data came from the 1974 Korean National Family Survey, which was conducted as part of the World Fertility Survey. The study focuses on the...

2015
Hirobumi Akagi Masahisa Fujita Hiroshi Goto Mitsuo Inada Ryo Ito Shinichiro Iwata Tatsuaki Kuroda Miwa Matsuo Tomoya Mori Atushi Nakajima Kentaro Nakajima Makoto Ogawa Takashi Unayama Isamu Yamauchi

This study empirically investigates whether agglomeration discourages married couples' fertility decisions. Exploiting Japanese social survey data to control for economic and social factors underlying fertility, it examines whether agglomeration affects completed fertility and the timing of childbirth. Results indicate that agglomeration impedes completed fertility. In addition, this study find...

2002
Mohammad Jalal Abbasi-Shavazi

This paper briefly reviews population policy changes and fertility trends over the last three decades, puts forward some possible explanations behind the fertility transition in Iran, and finally speculates about the future of fertility for the coming decades. Among the questions to be answered in this paper are: what are the recent changes of Iranian fertility? Will Iran follow the patterns ex...

Journal: :Human reproduction 2010
L Bunting J Boivin

BACKGROUND The aim of our research was to create a fertility status awareness tool (FertiSTAT) that would enable women to gain personalized guidance about reducing risks to their fertility and seeking timely fertility medical advice based on their own lifestyle and reproductive profile. METHODS Independent risk factors associated with female fertility impairment were identified. Associations ...

Journal: :Proceedings of the Royal Society B: Biological Sciences 2008
Andrew I Barnes Stuart Wigby James M Boone Linda Partridge Tracey Chapman

Male seminal fluid proteins induce a profound remodelling of behavioural, physiological and gene signalling pathways in females of many taxa, and typically cause elevated egg production and decreased sexual receptivity. In Drosophila melanogaster, these effects can be mediated by an ejaculate 'sex peptide' (SP), which, in addition, contributes significantly to the cost of mating in females. Rec...

2007
Osamu Saito

This paper questions the proposition that fertility was invariably high among populations before the fertility transition. By examining factors affecting pre-transition fertility based on the evidence from Japan and India in the pre-World War II period, together with that from England and Germany in the traditional period, it suggests that in most historical populations fertility was below the ...

Abdul Latif, Aminul Islam, Injamul Haq Methun Iqramul Haq, Mahabub Alam, Sheikh Giash Uddin, Sultana Bethe

Introduction: Fertility is a vital ingredient in measuring population fluctuation. Bangladesh is still above the level of transplantation of fertility. The target of this research was to determine the proximate factors on fertility rate reduction in Bangladesh. Methods: The 2014 Bangladesh Demographic and Health Survey (BDHS) was used as secondary data. T...

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