Design and Analysis of Observational Studies
نویسندگان
چکیده
منابع مشابه
postnatal studies of bats (pipistrellus kuhlii and miniopterus schreibersii) & histomorphology and histochemistry studies of organs and diseases of (neurergus microspilotus and n. kaiseri)
1. to determine whether difference in birth body mass influenced growth performance in pipistrellus kuhlii we studied a total of 12 captive-born neonates. bats were assigned to two body mass groups: light birth body mass (lbw: 0.89 ± 0.05, n=8) and heavy birth body mass (hbw: 1.35 ± 0.08, n=4). heavier body mass at birth was associated with rapid postnatal growth (body mass and forearm length) ...
Cytomegalovirus infection and risk of preeclampsia: A meta-analysis of observational studies
Background: Cytomegalovirus (CMV) infection is one of the most common infectious diseases in pregnant women in terms of global impact and is related with many adverse health consequences during pregnancy. For the first time, we performed a systematic review and meta-analysis study to evaluate the possible association between CMV infection and preeclampsia (PE). Methods: A comprehensive literat...
متن کاملWestern Dietary Pattern Reduced Male Fertility: A Systematic review and Meta-analysis of Observational Studies
Background: Previous studies have investigated the associations between dietary patterns and male infertility, but found contradictory results. So, this meta-analysis was conducted to examine the association between dietary patterns and male infertility. Methods: An electronic search was conducted to identify the studies over association between dietary patterns and male infertility. The wester...
متن کاملDesign Sensitivity in Observational Studies
If an observational study were free of unobserved bias, we would not know this from the observed data. The best we could hope to say is that only very large unobserved biases could alter the conclusions of the study. What features of the design of an observational study reduce its sensitivity to unobserved biases? How can designs for observational studies be compared quantitatively in terms of ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: International Journal of Infertility & Fetal Medicine
سال: 2014
ISSN: 2229-3817,2229-3833
DOI: 10.5005/jp-journals-10016-1079