AI Article Synopsis
- The study investigates the rising rates of labor induction in Iceland from 1997 to 2018, aiming to understand the factors behind this increase.
- Data from the Icelandic Medical Birth Register showed a significant rise in labor induction rates from 12.5% to 23.9% over two decades, with certain health conditions like gestational diabetes and hypertensive disorders increasingly indicated for induction.
- Despite accounting for known maternal factors and indications, 9.2% of inductions lacked a clear explanation, suggesting the need for further research to uncover reasons behind these unexplained cases.
Article Abstract
Introduction: Use of labor induction has increased rapidly in most middle- and high-income countries over the past decade. The reasons for the stark rise in labor induction are largely unknown. We aimed to assess the extent to which the rising rate of labor induction is explained by changes in rates of underlying indications over time.
Material And Methods: The study was based on nationwide data from the Icelandic Medical Birth Register on 85 620 singleton births from 1997 to 2018. The rate of labor induction and indications for induction was calculated for all singleton births in 1997-2018. Change over time was expressed as relative risk (RR), using Poisson regression with 95% confidence intervals (CI) adjusted for maternal characteristics and indications for labor induction.
Results: The crude rate of labor induction rose from 12.5% in 1997-2001 to 23.9% in 2014-2018 (crude RR = 1.91, 95% CI 1.81-2.01). While adjusting for maternal characteristics had little impact, adjusting additionally for labor induction indications lowered the RR to 1.43 (95% CI 1.35-1.51). Induction was increasingly indicated from 1997-2001 to 2014-2018 by gestational diabetes (2.4%-16.5%), hypertensive disorders (7.0%-11.1%), prolonged pregnancy (16.2%-23.7%), concerns for maternal wellbeing (3.2%-6.9%) and maternal age (0.5%-1.2%). No indication was registered for 9.2% of inductions in 2014-2018 compared with 16.3% in 1997-2001.
Conclusions: Our results show that the increase in labor induction over the study period is largely explained by an increase in various underlying conditions indicating labor induction. However, indications for 9.2% of labor inductions remain unexplained and warrant further investigation.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9812102 | PMC |
| http://dx.doi.org/10.1111/aogs.14447 | DOI Listing |
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