Table 2.
Subject characteristics and dietary intake: comparison between subgroups of IBS
| Subject characteristics and food groups | C-IBS n =103 | A-IBS n =174 | D-IBS n =111 | p |
|---|---|---|---|---|
| Age, years |
48.3 (14.2) |
46.0 (13.2) |
47.0 (12.7) |
0.51 |
| Female, n, % |
86 (83%) |
123 (71%) |
53 (48%) |
<0.001A |
| Severity of symptoms (1-12) |
2.7 (2.3) |
3.0 (2.3) |
3.8 (2.5) |
<0.001B |
| Fruits and berries, 100 g/day |
1.0 (0.7) |
0.8 (0.7) |
0.8 (0.8) |
0.068 |
| Vegetables, 100 g/day |
1.7 (2.2) |
1.5 (1.1) |
1.4 (1.2) |
0.10 |
| Potatoes, 100 g/day |
0.4 (0.9) |
1.2 (0.8) |
1.2 (0.8) |
0.13 |
| Dairy products, portions1/day |
2.2 (1.5) |
2.2 (1.6) |
2.0 (1.4) |
0.71 |
| Omega 3 fatty acids2, g/day |
0.7 (0.6) |
0.7 (0.7) |
0.7 (0.7) |
0.87 |
| Water, 100 ml/day |
3.9 (1.9) |
3.9 (2.0) |
3.7 (1.9) |
0.65 |
| Juice, 100 ml/day |
0.9 (1.2) |
0.9 (1.1) |
1.0 (1.2) |
0.90 |
| Carbonated beverages, 100 ml/day |
1.4 (1.6) |
1.9 (2.4) |
2.0 (2.1) |
0.13 |
| Tea,100 ml/day |
1.7 (2.2) |
1.9 (2.6) |
1.4 (2.6) |
0.094 |
| Coffee,100 ml/day |
4.3 (3.5) |
4.0 (4.2) |
4.4 (3.3) |
0.39 |
| Alcohol, units3/day | 0.1 (0.2) | 0.2 (0.6) | 0.3 (0.6) | 0.006C |
1 Dairy product portions are defined as either 150 ml milk/yoghurt or 20 g (one slice) of cheese.
2 Omega 3 fatty acids are calculated from fatty fish and fish oil supplements.
3 Units of alcohol are defined as 12.8 g (15 ml) of pure alcohol.
A A-IBS vs. D-IBS: p < 0.001; C-IBS vs. D-IBS: p < 0.001; C-IBS vs. A-IBS: p = 0.020 B A-IBS vs. D-IBS: p = 0.001; C-IBS vs. D-IBS: p < 0.001.
C C-IBS vs. A-IBS: p = 0.008; C-IBS vs. D-IBS: p = 0.003.
From original data with Kruskal Wallis Test/Mann-Whitney U test for continuous and Fisher exact test for dichotomous variables. Only age, gender, severity of symptoms and food groups are shown. Values are mean (SD) unless otherwise stated.