Table 2: Intake frequencies of different foods based on a sample of Swedish women with and without rheumatoid arthritis.

<1/month 1-3/month 1-2/week 3-6/week 1-2/day > 3/days Adjusted P-value Crude P-value
Root vegetables RA n = 147 8 18 35 31 8 1 0.669a 0.91
Without RA n = 163 6 22 29 37 6 1
Legumes RA n = 146 19 30 36 14 1 1 0.185a 0.096
Without RA n = 162 15 25 36 19 5 0
Vegetables RA n = 149 0 1 10 34 46 9 0.335b 0.084
Without RA n = 163 1 2 6 22 63 8
Fruit and berries RA n = 149 1 5 6 31 42 14 0.205b 0.619
Without RA n = 163 3 3 9 29 45 10
Nuts and seeds RA n = 148 21 26 23 19 11 1 0.003d** < 0.001**
Without RA n = 163 9 19 28 20 24 1
Charcuteries RA n = 148 24 17 24 24 10 1 0.603a 0.35
Without RA n = 162 26 20 25 23 6 0
Sausages, hamburgers, kebab RA n = 142 47 37 16 1 0 0 0.134c 0.134
Without RA n = 159 37 45 18 0 0 0
Chicken RA n = 148 7 14 63 15 1 0 0.106a 0.467
Without RA n = 162 10 9 57 22 2 0
Red meat RA n = 150 15 13 47 24 1 0 < 0.001a** 0.036*
Without RA n = 163 9 12 44 32 3 0
Lean fish RA n = 149 16 35 44 4 1 0 0.378a 0.747
Without RA n = 162 10 37 46 7 0 0
Fatty fish RA n = 122 17 33 41 5 1 0 0.416a 0.398
Without RA n = 106 10 35 50 5 0 0
Shellfish RA n = 123 41 42 14 1 0 0 0.099e 0.240
Without RA n = 106 27 56 15 2 0 0
Mussels RA n = 122 90 6 1 0 0 0 0.023f* 0.074
Without RA n = 106 86 11 1 1 0 1
Sweets and chocolate RA = 148 22 30 36 10 3 0 0.118e 0.011*
Without RA = 163 13 25 44 15 3 0
Ice cream RA = 149 48 36 13 3 1 0 0.359a 0.201
Without RA = 161 37 47 14 3 0 0
Snacks RA = 150 44 39 15 1 0 0 0.388e 0.015*
Without RA = 162 32 44 24 1 0 0
Pastries RA = 150 30 31 26 10 3 0 0.559a 0.894
Without RA = 162 27 33 33 6 1 0

RA: Rheumatoid arthritis All P values calculated with linear regression models. a) Adjusted for age, body mass index and education. b) Adjusted for body mass index and education. c) Adjusted for age and body mass index. d) Adjusted for education. e) Adjusted for education and age. f) Adjusted for age. * p < 0.05, **p < 0.01.