Swedish health care and national health registers are dependent on the presence of a unique
identifier. This paper describes the Swedish personal identity number (PIN) and explores …

Purpose To describe the content and potentials of the new Swedish national register on
prescribed and dispensed medicines. Methods The Swedish Prescribed Drug Register contains …

Background The Swedish National Inpatient Register (IPR), also called the Hospital Discharge
Register, is a principal source of data for numerous research projects. The IPR is part of …

… In a Letter to the Editor (Källén and Otterblad Olausson, 2006) we published a preliminary
report from the Swedish Medical Birth Register and found an OR of 2.22 (95% CI = 1.39–3.55) …

Objective To estimate the effect of low maternal age on late fetal death and infant mortality
and to estimate the extent of any increase in infant mortality attributable to higher rates of …

BACKGROUND The possible excess of congenital malformations in infants born after in vitro
fertilization (IVF) has been much discussed in the literature, with controversial conclusions. …

The purpose of the paper is to identify maternal drug use that may be associated with an
increased risk for cardiac defects in the offspring. A case-control study was performed with …

Objective To investigate obstetric characteristics, maternal morbidity and mortality among
Swedish women giving birth after in vitro fertilisation (IVF) treatment. Design Register study. …

In order to evaluate the previously published association between maternal use of selective
serotonin re‐uptake inhibitors (SSRI) and persistent pulmonary hypertension in the neonate (…

OBJECTIVES: Studies conducted so far have found no statistically significant increased risk
for cancer among children who are born after in vitro fertilization (IVF). METHODS: We …