Fig. 1

Daily intake of food groups in g/1000 kcal/d, by gender, among 20–49 y., Greater Tunis. Mean average daily intake of food items identified by the 3-day prospective food record (see Additional file 1: Table S1), recoded in 20 food groups (women n = 1651, men n = 894). Bar is weighted mean value in g/1000 kcal /d for each gender, symbol on bar is standard error of the mean (taking into account complex sampling design). P-Value: gender contrast for average daily intake of each food group