New insights into smoking and urinary tract infections during pregnancy using pregnancy-pair design: A population-based register study.

Introduction: Pregnancy itself predisposes to urinary tract infections (UTI). There appears to be a higher prevalence of infections and genitourinary diseases among pregnant smokers than among non-smokers. The present study is a retrospective observational register study aiming to investigate whether maternal smoking is associated with the prevalence of UTIs during pregnancy by utilizing a pregnancy-pair analysis.

Design of a prospective follow-up study on early parenthood and smoking behaviour during pregnancy in Finnish primary healthcare.

The primary aim of the study is to explore different factors affecting parents' smoking behaviour, and especially how smoking may be connected with individual differences in the psychological process of becoming a parent. In the current paper, we present the study design together with basic information on the study population. The Central Satakunta Maternity and Child Health Clinic (KESALATU) Study is an ongoing prospective follow-up study in primary healthcare of the Satakunta region of southwest Finland.

Maternal Smoking and Hospital Treatment During Pregnancy.

Introduction: Previous research suggests that young maternal age, smoking, hospitalization during a previous pregnancy, and poor self-rated health could be risk factors for prenatal hospitalization.

Methods: The objective of this retrospective observational register study was to investigate if maternal smoking during pregnancy is associated with mother's need for hospital treatment during pregnancy. The study population consists of all singleton pregnancies (n = 961 127) in 1999-2015 in Finland.