Fig. 10
From: Osteoarthritis patients exhibit an autonomic dysfunction with indirect sympathetic dominance

Correlations of HRV parameters with perceived chronic stress and chronic pain levels in healthy controls, early and late OA patients. A Correlation matrix (heat map) representing the relationships between HRV parameters and perceived chronic stress (n = 205). B Correlation matrix (heat map) representing the relationships between HRV parameters and perceived pain (n = 205). In each cell, correlation coefficients and respective p values are provided