FIGURE 2.

Meta-regression analyses of 37 relevant randomized controlled trials (RCTs) that investigated the attenuation of postprandial glycemia in response to 4–10 g resistant maltodextrin (RMD). The 37 usable RCTs (Figure 1) consisted of 32 RCTs with available carbohydrate from starch foods and 5 with available carbohydrate from refined carbohydrates (glucose, sucrose, and maltodextrin) (22, 23). RCTs that used starch foods were further divided into 16 RCTs in which the RMD was consumed in drinks (22, 24–36) and 16 RCTs in which the RMD was incorporated into solid or liquid foods (31, 37–48). The trends show a decrease in the percentage glycemic response per 10 g RMD ingested. Estimates of heterogeneity (I² or fraction of variation among trial means due to variation among and within studies) are common to estimates in each row. Difference estimates were derived by nonlinear combination of regression coefficients.