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BioMed Research International
Volume 2015 (2015), Article ID 978079, 8 pages
Research Article

Preterm Birth: A Prominent Risk Factor for Low Apgar Scores

1Department of Obstetrics and Gynecology, Kalmar County Hospital, 391 85 Kalmar, Sweden
2Department of Clinical Physiology, Kalmar County Hospital, 391 85 Kalmar, Sweden
3Department of Medicine and Health Sciences, Linköping University Hospital, 581 85 Linköping, Sweden
4Department of Obstetrics and Gynecology, and Department of Clinical and Experimental Medicine, Linköping University, 581 83 Linköping, Sweden

Received 2 January 2015; Accepted 5 February 2015

Academic Editor: Igor Hudic

Copyright © 2015 Maria Svenvik et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Objective. To determine predictive risk factors for Apgar scores < 7 at 5 minutes at two hospitals providing tertiary care and secondary care, respectively. Methods. A retrospective registry cohort study of 21126 births (2006–2010) using data from digital medical records. Risk factors were analyzed by logistic regression analyses. Results.   was multivariately associated with the following: preterm birth; gestational week 32 + 0–36 + 6, (95% CI 2.9–5.3); week 28 + 0–31 + 6, (5–12); week < 28 + 0, (8–29); postterm birth, (1.7–2.3); multiple pregnancy, (1.79–6.96); previous cesarean section, (2.31–5.81); BMI 25–29, (1.09–1.55);    (1.20–2.41); nonnormal CTG at admission, (1.48–2.66). ≥1-para was associated with a decreased risk for , (0.25–0.47). In the univariate logistic regression analysis was associated with tertiary level care, (1.17–1.87); however, in the multivariate analysis there was no significant difference. Conclusion. A number of partially preventable risk factors were identified, preterm birth being the most evident. Further, no significant difference between the two hospital levels regarding the risk for low Apgar scores was detected.