This is particularly the case for women from other Nordic countries and Central America, the differences being linked to, amongst other things, variation in the incidence of the Human Pappiloma Virus (HPV) around the world. HPV is a significant risk factor for cervical cancer.
"But there are other risk factors too, such as smoking, sexual habits and not taking screening tests, which make it interesting to compare cervical cancer rates between different groups of immigrant women in Sweden and native Swedes," says Professor Pär Sparén, who has led the study at the Department of Medical Epidemiology and Biostatistics.
The study included more than 750,000 resident immigrant women from different countries, all of whom are registered on Karolinska Institutet's national database of women's health. During the period under study (1968 to 2004) there were 1,991 cases of cervical cancer in this group. Compared with Swedish-born women in general, this represents a slightly higher risk of developing the disease (10 per cent). Also, the incidence proportion of cervical cancer amongst women who had immigrated to Sweden was lower than amongst women in their respective countries.
However, the study also shows wide variation between the immigrant groups. Women from east Africa generally were five times less likely to develop cervical cancer than Swedish-born women, while women from southern Asia were half as likely. Conversely, the risk was much higher for women from Norway and Denmark (70 per cent and 80 per cent, respectively) and Central America (150 per cent).
Professor Sparén's team also observed that the risk of cervical cancer increased with the age of entry into Sweden, but declined during their period of residency in their new homeland. Professor Sparén believes that his findings are important for the more effective prevention of cervical cancer through, for example, targeted screening programmes.
"We need to introduce targeted screening for the prevention of cervical cancer amongst high-risk groups, particularly women over 50 during their first ten years in Sweden," he says.
The study, which was funded with a grant from the Swedish Council for Working Life and Social Research (FAS) and the National Health Care Sciences Postgraduate School at Karolinska Institutet, was a joint project with Tehran University of Medical Sciences in Iran and Mälardalen University.
Publication: 'Risk of cervical cancer among immigrants by age at immigration and follow-up time in Sweden, from 1968 to 2004', Fatima Azerkan, Kazem Zendehdel, Per Tillgren, Elisabeth Faxelid and Pär Sparén, International Journal of Cancer, 3 September 2008.For further information, please contact:
Katarina Sternudd | idw
Europe’s Demographic Future. Where the Regions Are Heading after a Decade of Crises
10.08.2017 | Berlin-Institut für Bevölkerung und Entwicklung
Scientists reveal source of human heartbeat in 3-D
07.08.2017 | University of Manchester
Whether you call it effervescent, fizzy, or sparkling, carbonated water is making a comeback as a beverage. Aside from quenching thirst, researchers at the University of Illinois at Urbana-Champaign have discovered a new use for these "bubbly" concoctions that will have major impact on the manufacturer of the world's thinnest, flattest, and one most useful materials -- graphene.
As graphene's popularity grows as an advanced "wonder" material, the speed and quality at which it can be manufactured will be paramount. With that in mind,...
Physicists at the University of Bonn have managed to create optical hollows and more complex patterns into which the light of a Bose-Einstein condensate flows. The creation of such highly low-loss structures for light is a prerequisite for complex light circuits, such as for quantum information processing for a new generation of computers. The researchers are now presenting their results in the journal Nature Photonics.
Light particles (photons) occur as tiny, indivisible portions. Many thousands of these light portions can be merged to form a single super-photon if they are...
For the first time, scientists have shown that circular RNA is linked to brain function. When a RNA molecule called Cdr1as was deleted from the genome of mice, the animals had problems filtering out unnecessary information – like patients suffering from neuropsychiatric disorders.
While hundreds of circular RNAs (circRNAs) are abundant in mammalian brains, one big question has remained unanswered: What are they actually good for? In the...
An experimental small satellite has successfully collected and delivered data on a key measurement for predicting changes in Earth's climate.
The Radiometer Assessment using Vertically Aligned Nanotubes (RAVAN) CubeSat was launched into low-Earth orbit on Nov. 11, 2016, in order to test new...
A study led by scientists of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg presents evidence of the coexistence of superconductivity and “charge-density-waves” in compounds of the poorly-studied family of bismuthates. This observation opens up new perspectives for a deeper understanding of the phenomenon of high-temperature superconductivity, a topic which is at the core of condensed matter research since more than 30 years. The paper by Nicoletti et al has been published in the PNAS.
Since the beginning of the 20th century, superconductivity had been observed in some metals at temperatures only a few degrees above the absolute zero (minus...
16.08.2017 | Event News
04.08.2017 | Event News
26.07.2017 | Event News
23.08.2017 | Life Sciences
23.08.2017 | Life Sciences
23.08.2017 | Physics and Astronomy