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Table 1 Pre-treatment characteristics and correlations with outcome variables

From: Prediction of symptomatic improvement after exposure-based treatment for irritable bowel syndrome

     Correlation with GSRS-IBS
  n m sd Post-treatment Follow-up
Outcome variables      
GSRS-IBS at post-treatment   35.18 13.77   .53*
GSRS-IBS at follow-up   32.58 12.71 .53*  
Demographic variables      
Sex (male/female) 67/12    .14 -.17
Age   34.25 9.25 -.05 .03
Duration of IBS   13.70 11.10 .06 .07
University studies (yes/no) 52/27    -.19 -.04
Predictor variables      
GSRS-IBS at pre-treatment   47.74 11.00 .50* .30*
Study group (treatment/waiting list) 39/40    -.20 -.05
Any anxiety disorder (yes/no) 39/40    .15 .16
Major depressive disorder (yes/no) 15/62    .12 .27*
MADRS-S   11.20 7.99 .20 .36*
SSP-PSTA   2.56 0.69 .07 .17
SSP-STA   2.52 0.58 .03 .03
SCL-SOM   13.52 9.19 .17 .18
VSI   42.92 17.42 .21 .28*
CSQ-CAT   14.72 7.78 .35* .32*
ASI   19.24 12.01 .25* .17
IBS-QOL   52.45 20.57 -.41* -.31*
SDS   12.13 8.28 .37* .26*
  1. *p < .05 for bivariate correlation between predictor and predicted GSRS-IBS score. GSRS-IBS Gastrointestinal Symptom Rating Scale – IBS Version, MADRS-S Montgomery Åsberg Depression Rating Scale - Self Report, SSP-STA Swedish Universites Scales of Personalities - Somatic Trait Anxiety subscale, SSP-STA Swedish Universites Scales of Personalities – Psychic Trait Anxiety subscale, SCL-SOM Symptom Checklist – Somatization subscale, VSI Visceral Sensitivity Index, ASI Anxiety Sensitivity Index, CSQ-CAT Coping Strategies Questionnaire – Catastrophizing subscale, IBS-QOL Irritable Bowel Syndrome Quality of Life Instrument, SDS Sheehan Disability Scales.