Table 1

Comparison of reported food consumption frequencies (servings per month) between the Mediterranean Diet (MD) group and the Control Diet (CD) group. The food consumption frequencies are based on the food frequency questionnaires. The data are presented as medians (25th-75th percentiles).

MD group (n = 26)
 CD group (n = 25)
 p-value*


Time (weeks after dietary shift)
 Time (weeks after start of study)

0
 3
 12
 0
 3
 12
Cooked root vegetables
 6(2–16)
 16(6–16)
 11(5–16)
 2(2–6)
 6(0–6)
 2(0–6)
 0.027
Raw root vegetables
 6(2–16)
 16(16–26)
 6(6–16)†
 6(1–16)
 6(2–6)
 6(2–16)
 0.013
Cooked green vegetables
 16(6–16)
 16(16–26)
 26(16–26)‡
 6(4–16)
 6(4–16)
 6(2–16)
 <0.001
Raw green vegetables
 16(6–19)
 26(24–37)
 21(16–26)‡
 16(6–26)
 16(6–26)
 6(4–21)
 0.001
Legumes
 2(0–6)
 11(5–16)
 6(2–16)§
 2(0–4)
 2(2–6)
 2(0–2)
 0.002
Fruit and berries
 16(6–26)
 16(14–26)
 16(6–26)
 16(4–48)
 16(2–26)
 6(2–21)†
 0.395
Fish
 6(6–6)
 16(6–16)
 16(16–16)§
 6(2–6)
 6(6–16)
 6(2–6)
 <0.001
Shellfish
 2(0–2)
 2(0–6)
 4(2–6)‡
 2(0–2)
 2(0–2)
 2(0–2)
 <0.001
Black tea
 7(0–16)
 7(0–42)
 7(0–42)
 7(0–42)
 7(0–42)
 7(0–42)
 0.015
Green tea
 0
 25(0–42)
 7(0–42)§
 0
 0
 0
 <0.001

*The p-values refer to differences between the MD and CD groups concerning the change from baseline to week 12. Differences between the groups were analysed by Mann-Whitney U test. Statistically significant change from baseline to week 12: † p < 0.05, ‡ p < 0.01, § p < 0.001. Within- group differences at week 12 compared to baseline were evaluated by Wilcoxon signed ranks test.

Hagfors et al. Nutrition Journal 2003 2:5   doi:10.1186/1475-2891-2-5

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