Open Access Research article

Effect of interleukin-6 polymorphism on risk of preterm birth within population strata: a meta-analysis

Wilfred Wu1, Erin A S Clark2, Gregory J Stoddard3, W Scott Watkins1, M Sean Esplin2, Tracy A Manuck2, Jinchuan Xing14, Michael W Varner2 and Lynn B Jorde1*

Author Affiliations

1 Department of Human Genetics, University of Utah School of Medicine, Salt Lake City, UT 84112, USA

2 Department of Obstetrics and Gynecology, University of Utah School of Medicine, Salt Lake City, UT, 84112, USA

3 Study Design and Biostatistics Center, University of Utah School of Medicine, Salt Lake City, UT, 84112, USA

4 Department of Genetics, Rutgers, The State University of New Jersey, Piscataway, NJ, 08854, USA

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BMC Genetics 2013, 14:30  doi:10.1186/1471-2156-14-30

Published: 25 April 2013

Additional files

Additional file 1:

All the included and excluded papers and the reasons of inclusion or exclusion.

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Additional file 2:

Distribution of SNPs allele frequency differences for three continental populations.

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Additional file 3:

Meta-regression analysis for (a) maternal genotype studies, (b) fetal genotype studies.

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Additional file 4:

MOOSE checklist.

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