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Table 3 Correlation between changes in the 36-item short form health survey domains and changes in headache disability, severity and frequency following the therapeutic diet

From: Headache determines quality of life in idiopathic intracranial hypertension

Domain Headache disability (Headache impact test-6 score) Headache severity (Visual analogue pain scale) Headache frequency (days/week)
Physical functioning -0.67 -0.74 -0.48
p=0.001 p=0.001 p=0.052
Role limitation due to physical problems -0.70 -0.71 -0.53
p < 0.001 p=0.002 p=0.029
Role limitation due to emotional problems -0.71 -0.78 -0.38
p < 0.001 p < 0.001 p=0.14
Social functioning -0.81 -0.62 -0.60
p < 0.001 p=0.014 p=0.015
Mental health -0.64 -0.65 -0.46
p=0.003 p=0.009 p=0.075
Energy/Vitality -0.79 -0.70 -0.42
p < 0.001 p=0.004 p=0.11
Pain -0.66 -0.59 -0.60
p=0.002 p=0.018 p=0.010
General health perception -0.67 -0.68 -0.49
p=0.002 p=0.006 p=0.056
Change in health -0.58 -0.39 -0.63
p=0.007 p=0.13 p=0.007
Physical component score -0.59 -0.57 -0.55
p=0.007 p=0.027 p=0.027
Mental component score -0.88 -0.73 -0.45
p < 0.001 p=0.002 p=0.082
  1. If a Bonferroni correction were applied to account for the multiple domains of the SF-36, the p value is reduced to p < 0.0045, but this might represent an over correction.