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Table 9 Correlation analysis of somatization, anxiety, depression and the Nepean Dyspepsia Index

From: Developing the Patient Health Questionnaire-8 for a greater impact on the quality of life of patients with functional dyspepsia compared to Somatic Symptom Scale-8

Variable FD
(n = 612)
PDS
(n = 175)
EPS
(n = 112)
Overlap
(n = 325)
Anxiety     
R 0.327 0.258 0.268 0.367
P < 0.001 < 0.001 < 0.001 < 0.001
Depression     
R 0.354 0.266 0.304 0.394
P < 0.001 < 0.001 < 0.001 < 0.001
Somatization PHQ-8     
R 0.404 0.325 0.309 0.446
P < 0.001 < 0.001 < 0.001 < 0.001
Somatization SSS-8     
R 0.389 0.285 0.345 0.418
P < 0.001 < 0.001 < 0.001 < 0.001
  1. PHQ-8 Patient Health Questionnaire-8, SSS-8 Somatic Symptom Scale-8
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