European Heart Journal Advance Access originally published online on November 30, 2004
European Heart Journal 2005 26(1):44-50; doi:10.1093/eurheartj/ehi015
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Clinical research
Regional differences in the prevalence of pre-eclampsia in relation to the risk factors for coronary artery disease in women in Finland
1Department of Obstetrics and Gynecology, Helsinki University Hospital, Haartmaninkatu 2, 00290 Helsinki, Finland
2UKK Institute, PL 30, 33500 Tampere, Finland
Received June 23, 2004; revised September 3, 2004; accepted September 9, 2004 * Corresponding author. Tel: +358 9 47172850; fax: +358 9 47172812. E-mail address: risto.kaaja{at}huch.fi
Aims The aim of this study was to examine the prevalence of pre-eclampsia in Southern, Eastern, and Northern Finland, and the relationship between history of pre-eclampsia and maternal coronary artery disease (CAD) risk factors.
Methods and results Women aged 2564 years, who participated in a cross-sectional population survey and had been pregnant (n=3650), were studied. The proportion of women who had ever had pre-eclampsia was lower in Southern (7.9%) compared with Northern Finland (13.9%) (P=0.001), but did not differ from Eastern Finland (11.1%). In the logistic regression model, the age-adjusted prevalence of pre-eclampsia was 1.92-fold in Northern (95% CI: 1.462.53, P<0.001) and 1.47-fold in Eastern Finland (95% CI: 1.111.96, P=0.008) compared with Southern Finland. The odds ratios (ORs) were 1.70 (95% CI: 1.212.38, P=0.002) and 1.16 (95% CI: 0.821.64, P=0.40), respectively, when adjusted for age at first birth, current age, parity, body mass index (BMI), increased blood cholesterol, hypertension, diabetes/impaired glucose tolerance, CAD, and mother's myocardial infarction. History of pre-eclampsia was associated with increased blood cholesterol, higher current BMI and blood pressure, and higher current prevalence of hypertension, diabetes/impaired glucose tolerance.
Conclusions Pre-eclampsia is most prevalent in the Northern part of Finland and could only be partly explained by higher prevalence of CAD risk factors.
Key Words: Pre-eclampsia Regional differences Coronary artery disease Risk factors