Table 1.

Age, HAD anxiety, HAD depression, and IBS symptom severity

AgeAnxietyDepressionSymptom severity: usual intensityNumber of years
Control group
    Mean36.31.50.3
    SD7.31.60.6
    Max465.02.0
    Min250.00.0
IBS group
    Mean36.17.43.43.55.1
    SD8.13.12.60.81.3
    Max5016105.07.0
    Min244.00.03.03.0
p (group)NS0.0*0.0008
  • Max, Maximum; Min, minimum; p (group), two-tailed t test probability of group difference. *p < 0.00001.