. Author manuscript; available in PMC: 2013 Jul 24.

Published in final edited form as: J Am Diet Assoc. 2009 Jul;109(7):1194–1203. doi: 10.1016/j.jada.2009.04.004

Table 4. Least squares means and 99% confidence intervals for reported daily frequency of consumption of selected foods groups on the food frequency questionnaire, for low energy reporters (LERs) (n=220) and non-low energy reporters (Non-LERs) (n=220) by body mass index (BMI): The Observing Protein and Energy Nutrition (OPEN) Study.

Food groups	Mean (99% confidence intervals) of daily frequency of food groups n=number of participants
	Normal BMI (<25 kg/m²)		Overweight BMI (≥ 25 and < 30 kg/m²)		Obese BMI (≥ 30 kg/m²)		P for interaction
	LERs	Non-LERs	LERs	Non-LERs	LERs	Non-LERs
Milk in coffee or tea	0.19 (0.08, 0.46) n=28	0.47 (0.24,0.93) ^* n=47	0.28 (0.15, 0.55) n=53	0.18 (0.08, 0.38) n=41	0.30 (0.12, 0.80) n=33	0.28 (0.08, 1.02) n=19	0.05
Candy	0.14 (0.09, 0.22) n=54	0.13 (0.09, 0.19) n=80	0.09 (0.07, 0.13) n=92	0.22 (0.16, 0.31) ^* n=87	0.11 (0.07, 0.17) n=70	0.27 (0.16, 0.45) ^* n=51	0.003
Mayo-type dressing	0.09 (0.05, 0.14) n=48	0.12 (0.08, 0.18) n=74	0.07 (0.05, 0.10) n=85	0.21 (0.15, 0.31) ^* n=80	0.13 (0.08, 0.19) n=67	0.18 (0.11, 0.29) n=48	0.009

p<0.01 LER compared to Non-LER. Among consumers of each food group, the total daily frequency of consumption was regressed on log transformed total energy intake (estimated using doubly labeled water) to compute least squares means and 99% confidence intervals for daily frequency of consumption of a food group in LERs and non-LERs.