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Table 3 Correlation matrix between the changes in PSQI, GSRS, and QOL scores in the yogurt group

From: Consumption of OLL1073R-1 yogurt improves psychological quality of life in women healthcare workers: secondary analysis of a randomized controlled trial

  PSQI GSRS SF-8 sub-categories SF-8 summary scores
GH VT SF PCS MCS
r* p r* p r* p r* p r* p r* p r* p
PSQI 1.00             
GSRS 0.08 0.094 1.00           
GH  − 0.16  < 0.001  − 0.12 0.009 1.00         
VT  − 0.26  < 0.001  − 0.12 0.007 0.41  < 0.001 1.00       
SF  − 0.08 0.072  − 0.03 0.50 0.26  < 0.001 0.36  < 0.001 1.00     
PCS  − 0.07 0.12  − 0.18  < 0.001 0.45  < 0.001 0.36  < 0.001 0.14 0.003 1.00   
MCS  − 0.22  < 0.001  − 0.12 0.010 0.23  < 0.001 0.36  < 0.001 0.58  < 0.001  − 0.31  < 0.001 1.00
  1. *Spearman's rank correlation coefficient
  2. PSQI, Pittsburgh Sleep Quality Index; GSRS, Gastrointestinal Symptom Rating Scale; GH, general health; VT, vitality; SF, social functioning; PCS, physical component summary; MCS, mental component summary