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Table 4 Associations between the Dietary Inflammatory Index (DII) and IBS-QOL, IBS-SSS, IBS-EISSS, abdominal pain, abdominal distension, bloating, rumbling and total gastrointestinal symptoms in IBS patients

From: “Association between dietary inflammatory index (DII) and risk of irritable bowel syndrome: a case-control study”

Variables Mean ± SD or N (%) P-Trend Correlation coefficient (r) P value
Quartile1
(<−1.49)
Quartile2
(− 1.49 ≤ to < 0.11)
Quartile3
(0.11 ≤ to < 1.65)
Quartile4
(1.65≤)
IBS-QOL 67.29 ± 15.88 64.60 ± 14.21 66.51 ± 13.16 69.87 ± 13.99 0.392 0.046 0.572
IBS-SSS 242.85 ± 112.10 274.21 ± 97.04 226.73 ± 94.63 235.82 ± 105.59 0.275 0.005 0.949
IBS-EISSS 23.22 ± 12.07 26.64 ± 14.66 25.14 ± 10.61 22.79 ± 12.22 0.516 0.087 0.284
abdominal pain 38.44 ± 30.40 45.54 ± 30.02 32.81 ± 28.92 38.17 ± 29.86 0.382 −0.056 0.485
abdominal distension 48.52 ± 29.27 51.32 ± 27.35 45.05 ± 26.33 46.57 ± 29.14 0.818 0.036 0.657
Bloating 45.37 ± 31.32 56.50 ± 32.92 51.98 ± 28.84 48.74 ± 31.36 0.559 0.078 0.337
Rumbling 42.89 ± 35.27 43.89 ± 31.93 41.38 ± 30.66 41.38 ± 30.66 0.985 0.085 0.293
Total gastrointestinal symptoms 55.96 ± 33.06 70.21 ± 27.52 58.64 ± 27.22 59.76 ± 28.34 0.258 −0.021 0.799
  1. IBS irritable bowel syndrome, IBS-QOL IBS-quality of life, IBS-SSS IBS-symptom severity scale, IBS-EISSS IBS-extra-intestinal symptom severity
  2. The One-way analysis of variance (ANOVA) was used for comparison of the variables between DII quartiles