highly significantp<0.001
There were highly significant mean reductions in the scores in all domains of IBS-SSS: pain severity scores (pre-GFH 61 vs 26 post-GFH, p<0.001), pain frequency scores (pre-GFH 61 vs 31 post-GFH, p<0.001), abdominal bloating severity (pre-GFH 51 vs 26 post-GFH, p<0.0001), dissatisfaction with bowel habit (pre-GFH 63 vs 33 post-GFH, p<0.0001) and interference with life (pre-GFH 76 vs 39 post-GFH, p<0.0001).