Baewert A, Jagsch R, Winklbaur B, Kaiser G, Thau K, Unger A, Aschauer C, Weninger M, Metz V. Influence of Site Differences between Urban and Rural American and Central European Opioid-Dependent Pregnant Women and Neonatal Outcome Characteristics.
Eur Addict Res 2012;
18:130-9. [PMID:
22354163 PMCID:
PMC3696360 DOI:
10.1159/000335082]
[Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/21/2011] [Accepted: 10/28/2011] [Indexed: 11/19/2022]
Abstract
BACKGROUND
Multi-center trials enable the recruitment of larger study samples, although results might be influenced by site-specific factors.
METHODS
Site differences of a multi-center prospective double-blind, double-dummy randomized controlled trial (7 centers: Central Europe (Vienna)/USA (3 urban/3 rural centers)) comparing safety and efficacy of methadone and buprenorphine in pregnant opioid-dependent women and their neonates.
RESULTS
Urban US women had the highest rate of concomitant opioid (p = 0.050) and cocaine consumption (p = 0.003), the highest dropout rate (p = 0.001), and received the lowest voucher sums (p = 0.001). Viennese neonates had significantly higher Apgar scores 1 min (p = 0.001) and 5 min after birth (p < 0.001) and were more often born by cesarean section (p = 0.024). Rural US newborns had a significantly shorter neonatal abstinence syndrome treatment duration compared to Viennese and urban US sites (p = 0.006), in addition to other site-specific differences, suggesting a more severely affected group of women in the urban US sites.
CONCLUSION
This clinical trial represents a role model for pharmacological treatment in this unique sample of pregnant women and demonstrates the clinical importance of considering site-specific factors in research and clinical practice.
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