This categorization was chosen based on the recommendation that most Americans consume at least half of all grains as WG or 3 oz eq/d [8]. Furthermore, the study populations were divided into tertiles based on total dietary fiber intake (in g/d): for adults (<11.6, 11.6-19.2, >19.2) and children and adolescents (<9.6, 9.6-15.4, >15.4). The percentage of individuals among different fiber tertiles was then assigned to the corresponding WG group. The food sources of total dietary fiber were calculated for children/adolescents and adults and reported by WG intake group.

Because RTE cereals are a primary source of WG, the percentage click here of fiber contributed by RTE cereals was calculated by the WG intake group. Categories of RTE cereals included WG with added bran, WG with no added

bran, non-WG with added bran, and non-WG with no added bran. All statistical analyses were performed with SAS 9.2 (SAS Institute, Cary, NC, USA). Dietary intake sample weights were applied to all analyses to account for the unequal probability of selection, noncoverage, and nonresponse bias resulting from oversampling of low-income persons, adolescents, elderly persons, Palbociclib African Americans, and Mexican Americans. Demographic, socioeconomic, and physical activity information was obtained from their respective NHANES questionnaires. Mean ± SEs for WG (in oz eq/d; Table 1) and total dietary fiber intake (in g/d; Table 2, Table 3 and Table 4) were calculated using PROC SURVEYMEANS, whereas the percentage of individuals per WG intake group and per WG intake group by fiber tertile (Table 1 and Table 2) was calculated using PROC SURVEYFREQ. Florfenicol Analysis of variance (ANOVA) was performed using the SURVEYREG procedure to determine if total dietary fiber intake differed across WG intake groups by fiber tertile and within the same tertile by WG intake group (Table 2). Multinomial logistic regression was performed to compare odds

of falling in different WG intake groups among different total dietary fiber intake tertiles (Table 2). Mean intake from each food source was divided by total intake to calculate percent contribution of fiber from different food sources using PROC SURVEYMEANS (Table 3). Similarly, mean fiber intake from different RTE cereals was calculated using PROC SURVEYMEANS (Table 4). Analysis of variance was used to determine if total dietary fiber differed for various food sources and RTE cereal type by WG intake group (Table 3 and Table 4). Mean intake from each WG food source was divided by total WG intake to calculate percent contribution of WG from different food sources using PROC SURVEYMEANS (Fig.). A P value of .05 or less was considered statistically significant. Approximately half of children/adolescents (49.9%) and adults (51.7%) were female. Most children/adolescents and adults were non-Hispanic white (57.7% and 68.3%, respectively), whereas 11.