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. Author manuscript; available in PMC: 2011 Mar 15.
Published in final edited form as: J Pediatr Gastroenterol Nutr. 2011 Jan;52(1):21–25. doi: 10.1097/MPG.0b013e3181f18c7b

Figure 2.

Figure 2

Glo-3A antibody levels by age in cases and controls. The Glo-3A data are from samples collected prior to and including the first TTG positive visit in cases or the comparable age-matched visit in controls. The solid circles (●) represent actual Glo-3A levels in cases, the solid line is the mean predicted curve for Glo-3A antibody levels by age in cases. The open circles (○) represent actual Glo-3A levels in controls, the dashed line is the mean predicted curve for Glo-3A levels by age in controls. Mixed modeling approaches were used to generate mean predicted curves of Glo-3A antibody levels by age and to test the difference between cases and controls using natural log transformed Glo-3A levels, which accounts for the multiple visits per study subject. The values for the mean predicted curves were then back-transformed for graphing purposes.