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Table 4 Gastrointestinal symptoms and food tolerance before and 6 months after the surgery in the two surgery groups

From: Changes in gastrointestinal symptoms and food tolerance 6 months following weight loss surgery: associations with dietary changes, weight loss and the surgical procedure

 

Pre-surgery

6 months post-surgery

RYGB

VSG

RYGB

VSG

GSRS-IBS-Pain (1–7)

1.50 (1.00 to 2.50)

1.00 (1.00 to 2.00)

2.00 (1.00 to 2.50)

2.50 (1.00 to 3.00) c*

GSRS-IBS-Satiety (1–7)

1.00 (1.00 to 1.50)

1.00 (1.00 to 1.00)

2.00 (1.50 to 3.00)

3.00 (2.50 to 4.00) a*, b*, c*, d*

GSRS-IBS-Bloating (1–7)

2.00 (1.25 to 3.08)

1.67 (1.00 to 2.33)

2.33 (1.67 to 3.33)

1.67 (1.33 to 3.00)

GSRS-IBS-Constipation (1–7)

1.00 (1.00 to 2.00)

1.00 (1.00 to 1.00)

1.00 (1.00 to 2.50)

1.00 (1.00 to 3.50) c*

GSRS-IBS-Diarrhea (1–7)

1.25 (1.00 to 2.00)

1.00 (1.00 to 1.50) a*

1.75 (1.25 to 2.25)

1.25 (1.00 to 1.75)

FTS (1–27)

24.0 (22.0 to 26.0)

25.5 (23.0 to 27.0)

23.0 (20.0 to 26.0)

20.0 (19.0 to 24.2) c*

  1. Data are given as median (25–75 percentiles). Mann-Whitney U-test (between group comparisons); Wilcoxon Signed Rank Test (within group comparison of changes). * Statistically significant p < 0.05: a RYGB vs. VSG; b Changes pre-to post-surgery within group (RYGB); c Changes pre-to post-surgery within group (VSG); d between-group comparisons (RYGB vs. VSG) of the changes pre-to post-surgery. GSRS-IBS: Gastrointestinal Symptom Rating Scale-Irritable Bowel Syndrome (range 1–7: Increasing values indicates increasing symptoms). FTS: Food Tolerance Score (range 1–27: Increasing values indicates better tolerance)