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Table 7 Correlation analysis of somatization, anxiety, depression, and the dyspepsia symptom severity

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 0.223 0.231 0.147 0.232
P < 0.001 < 0.001 < 0.001 < 0.001
Depression     
R 0.323 0.296 0.322 0.333
P < 0.001 < 0.001 < 0.001 < 0.001
Somatization PHQ-8     
R 0.374 0.396 0.293 0.346
P < 0.001 < 0.001 < 0.001 < 0.001
Somatization SSS-8     
R 0.399 0.395 0.281 0.362
P < 0.001 < 0.001 < 0.001 < 0.001
  1. FD functional dyspepsia, PDS postprandial distress syndrome, EPS epigastric pain syndrome, PHQ-8 Patient Health Questionnaire-8, SSS-8 Somatic Symptom Scale-8
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