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Table 7 Multivariate linear regression analysis to detect dietary predictors of frequency and intensity of migraine attacks, and severity of IBS

From: The potential impact of nutritional intake on symptoms severity in patients with comorbid migraine and irritable bowel syndrome

Dependent variables

Independent variables

B

P-value

95% Confidence Interval

Adjusted R Squared

Lower bound

Upper bound

Frequency of migraine attacks/ month

Fat

0.085

0.004*

0.027

0.142

0.390

Fiber

−0.184

0.501

−0.725

0.357

Zinc

−0.841

< 0.001*

−1.150

−0.532

Copper

1.523

0.296

−1.353

4.398

VAS

Fat

0.023

< 0.001*

0.012

0.035

0.365

Fiber

0.045

0.420

−0.066

0.156

Zinc

− 0.190

< 0.001*

− 0.253

− 0.126

Copper

−0.642

0.033*

−1.230

−0.054

IBS severity scoring system

Fat

−0.194

0.495

−0.758

0.369

0.587

Fiber

−10.99

< 0.001*

− 16.33

−5.637

Zinc

2.526

0.104

−0.525

5.577

Copper

137.43

< 0.001*

109.03

165.84

  1. IBS Irritable bowel syndrome, VAS Visual analogue scale
  2. *P-value ≤0.05 is considered significant