نتایج جستجو برای: fertility measures
تعداد نتایج: 402881 فیلتر نتایج به سال:
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...
INTRODUCTION Women diagnosed with cancer and facing potentially sterilising cancer treatment have to make time-pressured decisions regarding fertility preservation with specialist fertility services while undergoing treatment of their cancer with oncology services. Oncologists identify a need for resources enabling them to support women's fertility preservation decisions more effectively; women...
Estimates of age-specific fertility rates based on survey data are known to suffer down-bias associated with incomplete reporting. Previously, William Brass (1964, 1965, 1968) proposed a series of adjustments of such data to reflect more appropriate levels of fertility through comparison with data on children-ever-born by age, a measure of cohort-specific cumulative fertility. His now widely-us...
Lead is a reproductive toxicant. Exposure to inorganic lead is detrimental to human semen quality. The studies of the risk of spontaneous abortion and congenital malformation have shown contradictory findings. The aim of the following review is to summarise the epidemiological evidence of the effects of inorganic lead on male fertility. The focus is on epidemiological studies of time-to-pregnan...
This paper demonstrates that the apparently much higher Hispanic/Mexican fertility is almost exclusively the product of period estimates obtained for immigrant women and that period measures of immigrant fertility suffer from 3 serious sources of biases that together significantly overstate fertility levels: difficulties in estimating the size of immigrant groups; the tendency for migration to ...
This paper analyzes how labor market instability since the late 1980s in Europe mediated decisions to second births. In particular, it examines which are the dimensions of economic uncertainty that affect women with different educational backgrounds. First, employing time varying measures of aggregate market conditions for women in twelve European countries as well as micro-measures of each wom...
Bongaarts and Feeney offer alternatives to period life expectancy with a set of demographic measures equivalent to each other under a Proportionality Assumption. Under this assumption, we show that the measures are given by exponentially weighted moving averages of earlier values of period life expectancy. They are indices of mortality conditions in the recent past. The period life expectancy i...
The aim of the study was to explain whether or not the time of ovarian cyst (OC) formation had an influence on reproductive performance in dairy cows. Eighty cows with OC (group A first OC diagnosis < 42 d postpartum; group B first OC diagnosis > 42 d postpartum) were compared with 80 control cows without OC matching in lactation number and calving date. Milk yield was higher in OC cows compare...
BACKGROUND A New Zealand randomized trial has shown that lipiodol treatment enhances fertility with high short-term effectiveness for women with endometriosis. METHODS An open randomized trial in a single-centre secondary- and tertiary-level infertility service assessing lipiodol flushing versus no intervention. A total of 158 women with unexplained infertility (62 women with mild endometrios...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید