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Influence of Socio-Economic Factors and Region of Birth on the Risk of Preeclampsia in Sweden

Author

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  • Kristina Mattsson

    (Division of Occupational and Environmental Medicine, Institute of Laboratory Medicine, Lund University, SE-223 83 Lund, Sweden)

  • Sol Juárez

    (Centre for Health Equity Studies (CHESS), Department of Public Health Sciences, Stockholm University, SE-114 19 Stockholm, Sweden)

  • Ebba Malmqvist

    (Division of Occupational and Environmental Medicine, Institute of Laboratory Medicine, Lund University, SE-223 83 Lund, Sweden)

Abstract

Objectives: To investigate the association between socio-economic factors and the risk of preeclampsia in Sweden, specifically investigating if this relationship is confounded by maternal region of birth. Study design: All singleton births between 1999 and 2009 in an ethnically diverse area in southern Sweden, totaling 46,618 pregnancies, were included in this study. The data on maternal pregnancy outcomes were retrieved from a regional birth register and socio-economic variables from Statistics Sweden. The risk ratios for preeclampsia were calculated for educational level and household disposable income, adjusting for maternal region of birth, maternal age, body mass index, parity, and smoking. Results: Low income levels were associated with a higher risk for preeclampsia, adjusted risk ratio (aRR) = 1.25 (95% confidence interval [CI]: 0.99, 1.59) and aRR = 1.36 (95% CI: 1.10, 1.68) for the two lowest quintiles, respectively, compared to the highest. There was an educational gradient in preeclampsia risk, although not all categories reached statistical significance: aRR = 1.16, (95% CI: 0.89–1.50) for low educational attainment and aRR = 1.23 (95% CI: 1.08, 1.41) for intermediate educational attainment compared to women with highest education. The socio-economic gradient remained after adjusting for region of birth. There was a lower risk for preeclampsia for women born in Asia, aRR = 0.60 (95% CI: 0.47, 0.75), regardless of socio-economic position. Conclusion: An increased risk for preeclampsia was seen for women with measures of lower socio-economic position, even in a universal, government-funded healthcare setting. The relationship was not explained by region of birth, indicating that the excess risk is not due to ethnically differential genetic pre-disposition but rather due to modifiable factors.

Suggested Citation

  • Kristina Mattsson & Sol Juárez & Ebba Malmqvist, 2022. "Influence of Socio-Economic Factors and Region of Birth on the Risk of Preeclampsia in Sweden," IJERPH, MDPI, vol. 19(7), pages 1-9, March.
    • Handle: RePEc:gam:jijerp:v:19:y:2022:i:7:p:4080-:d:782824
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    References listed on IDEAS

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    1. Gunnar Andersson & Ognjen Obućina & Kirk Scott, 2015. "Marriage and divorce of immigrants and descendants of immigrants in Sweden," Demographic Research, Max Planck Institute for Demographic Research, Rostock, Germany, vol. 33(2), pages 31-64.
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