Table 1.
Subject characteristics and dietary intake in subjects with and without IBS
| Subject characteristics and food groups (% missing) | IBS n = 388 | Non IBS n = 4233 | p |
|---|---|---|---|
| Female, % (0.0) |
67.5 |
55.3 |
< 0.001 |
| Age, years (0.0) |
46.9 (13.4) |
49.1 (13.9) |
0.002 |
| BMI, kg/m2 (0.2) |
26.9 (4.5) |
26.9 (4.2) |
0.58 |
| Education, years (1.0) |
12.0 (3.5) |
12.2 (3.5) |
0.67 |
| Number of diseases (0-9) (5.7) |
1.0 (1.3) |
0.5 (0.9) |
< 0.001 |
| HSCL101 (1-4) (6.4) |
1.6 (0.6) |
1.3 (0.4) |
< 0.001 |
| Musculoskeletal complaints (0-12) (28.9) |
3.6 (2.9) |
1.9 (2.1) |
< 0.001 |
| Physical activity, hours/day (9.3) |
2.8 (1.7) |
3.0 (1.7) |
0.020 |
| Smoking, % (0.6) |
32.7 |
27.9 |
0.045 |
| Cholesterol, mmol/L (0.1) |
5.6 (1.1) |
5.7 (1.1) |
0.036 |
| HDL, mmol/L (0.1) |
1.3 (0.4) |
1.4 (0.4) |
0.061 |
| Triglycerides, mmol/L (0.2) |
1.6 (1.0) |
1.7 (1.1) |
0.12 |
| Glucose, mmol/L (0.5) |
5.3 (1.3) |
5.4 (1.4) |
0.39 |
| Creatinine clearance (0.2) |
88.1 (25.8) |
87.7 (25.5) |
0.80 |
| Systolic blood pressure, mm Hg (0.0) |
127.1 (20.7) |
130.3 (20.9) |
0.002 |
| Diastolic blood pressure, mm Hg (0.0) |
73.2 (10.2) |
74.4 (10.2) |
0.028 |
| Pulse, beats/minute (0.1) |
72.5 (11.2) |
71.9 (12.4) |
0.23 |
| Fruits and berries, g/day (1.3) |
86.0 (74.8) |
92.9 (76.0) |
0.035 |
| Vegetables, g/day (1.6) |
150.5 (116.0) |
147.4 (108.9) |
0.87 |
| Potatoes, g/day (0.7) |
123.5 (83.4) |
136.3 (88.0) |
0.005 |
| Dairy products, portions2/day (13.8) |
2.2 (1.5) |
2.6 (1.5) |
< 0.001 |
| Water, 100 ml/day (1.1) |
3.9 (1.9) |
3.5 (1.9) |
0.001 |
| Carbonated beverages, 100 ml/day (0.7) |
1.8 (2.1) |
1.4 (1.6) |
<0.001 |
| Coffee, 100 ml/day (0.6) |
4.2 (3.8) |
4.4 (3.3) |
0.16 |
| Tea, 100 ml/day (0.4) |
1.7 (2.5) |
1.3 (2.3) |
0.003 |
| Juice, 100 ml/day (5.2) |
0.9 (1.2) |
0.8 (1.0) |
0.37 |
| Alcohol, units3/day (4.1) |
0.22 (0.50) |
0.19 (0.29) |
0.12 |
| Omega 3 fatty acids4, g/day (4.3) | 0.7 (0.7) | 0.8 (0.7) | 0.012 |
1 Hopkins Symptom Checklist 10 for mood disorders measurement.
2 Dairy product portions are defined as either 150 ml milk/yoghurt or 20 g (one slice) of cheese.
3 Units of alcohol are defined as 12.8 g (15 ml) of pure alcohol.
4 Omega 3 fatty acids are calculated from fatty fish and fish oil supplements.
From original data with Mann-Whitney U test/Chi-square test. Values are mean (SD) unless otherwise stated.