OBJECTIVES To assess whether bacterial vaginosis affects the rates of conception and miscarriage in the first trimester. DESIGN Cohort study. SETTING Assisted conception unit of a teaching hospital in Leeds. PARTICIPANTS 867 consecutive women undergoing in vitro fertilisation. INTERVENTIONS Screening for bacterial vaginosis with a Gram stained vaginal smear before egg collection. MAIN...

in this research a comparative study has been made between case and control groups. the cases were low birth weight newborns (under 2500 gr) and the controls were normal berth weighing 2500 gr or more at birth. four groups of birth weight were considered as follows: very low birth weight, low birth weight, moderately low birth weight and normal. the data were collected over a period of 8 months...

Data on children ever born from surveys conducted between 1984 and 1988 provide evidence for fertility decline in Pakistan and little evidence for a "zig zag" pattern of variations in the levels of the birth rate reported in surveys conducted between 1962 and 1988. This study is concerned with the indirect estimation of the crude birth rate (CBR). Input data is available on age specific morta...