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Age, HAD anxiety, HAD depression, and IBS symptom severity
| Age | Anxiety | Depression | Symptom severity: usual intensity | Number of years | |
|---|---|---|---|---|---|
| Control group | |||||
| Mean | 36.3 | 1.5 | 0.3 | ||
| SD | 7.3 | 1.6 | 0.6 | ||
| Max | 46 | 5.0 | 2.0 | ||
| Min | 25 | 0.0 | 0.0 | ||
| IBS group | |||||
| Mean | 36.1 | 7.4 | 3.4 | 3.5 | 5.1 |
| SD | 8.1 | 3.1 | 2.6 | 0.8 | 1.3 |
| Max | 50 | 16 | 10 | 5.0 | 7.0 |
| Min | 24 | 4.0 | 0.0 | 3.0 | 3.0 |
| p (group) | NS | 0.0* | 0.0008 |
Max, Maximum; Min, minimum; p (group), two-tailed t test probability of group difference. *p < 0.00001.
