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Table 1 Daily intake of total grain and whole grain ounce equivalents based on NHANES data (2001–02 to 2011–2012)a,b,c,d

From: Whole grain consumption trends and associations with body weight measures in the United States: results from the cross sectional National Health and Nutrition Examination Survey 2001–2012

Age-group 2001–2002 2003–2004 2005–2006 2007–2008 2009–2010 2011–12 P for linear trend P for curvilinear trend
Total grain (oz eq/d)   
  Mean ounce equivalent ± standard errorb   
n 3147 2747 2838 2134 2263 2151   
6–18 years 7.4 ± 0.1 7.5 ± 0.1 7.4 ± 0.1 6.8 ± 0.2 7.2 ± 0. 2 7.2 ± 0.2 0.0476 0.3292
n 4647 4456 4405 5477 5820 4878   
19+ years 6.9 ± 0.1 6.8 ± 0.1 6.7 ± 0.1 6.4 ± 0.1* 6.5 ± 0.1* 6.8 ± 0.1 0.1513 0.0041
Whole grain (oz eq/d)       
  Mean ounce equivalent ± standard errorb   
n 3147 2747 2838 2134 2263 2151   
6–18 years 0.56 ± 0.03* 0.49 ± 0.03* 0.49 ± 0.04* 0.53 ± 0.04* 0.61 ± 0.02* 0.74 ± 0.03 <0.0001 <0.0001
n 4647 4456 4405 5477 5820 4878   
19+ years 0.72 ± 0.03** 0.63 ± 0.03** 0.73 ± 0.03** 0.69 ± 0.04** 0.84 ± 0.04** 0.97 ± 0.05 <0.0001 0.0007
  1. aDay 1 from foods only, excluding pregnant and breastfeeding women
  2. bMean Total Grain (oz eq/d) and Whole Grain (oz eq/d) intake were calculated using PROC SURVEYMEANS for all the 2 year cycles.
  3. cRegression analysis was performed to understand the linear and curvilinear trend in mean Total Grain and Whole Grain intake across different years of NHANES
  4. dANOVA was performed to compare mean Total Grain and Whole Grain intake of every cycle of NHANES with 2011–12
  5. *Mean Total Grain intake is significantly different than mean Total Grain intake of 2011–12 (p < 0.05)
  6. **Mean Whole Grain intake is significantly different than mean Whole Grain intake of 2011–12 (p < 0.05)