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. Author manuscript; available in PMC: 2012 May 1.
Published in final edited form as: Am J Obstet Gynecol. 2010 Nov 11;204(5):391.e1–391.e8. doi: 10.1016/j.ajog.2010.09.021

Figure 2.

Figure 2

A ROC curves demonstrating the predictive capability of 3 peptide markers to predict subsequent SPTB after sampling at 24 and 28 weeks. Area under the curve and 95% confidence intervals are also included for each marker at each visit.

B ROC curve demonstrating the predictive capability of the combination of 9 predictors including peak 677, peak 857, peak 860, corticotrophin releasing factor, defensin, ferritin, lactoferrin, thrombin antithrombin complex, and tumor necrosis factor – receptor type 1 to predict subsequent SPTB after sampling at 28 weeks. Area under the curve and 95% confidence intervals are also reported.

C. Normalized biomarker abundance was calculated for all individuals at 28 weeks. The graph shows biomarker (m/z 677) abundance in the sera of women having a subsequent SPTB or term delivery. Sixty five percent (26/40) of the women with subsequent SPTB had a value below the threshold whereas only 17.5 (7/40) percent of women with a term delivery had a value below the same threshold.