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Table 5 Correlations between clinical and HRQL measures

From: Measuring health-related quality of life in chronic obstructive pulmonary disease: properties of the EQ-5D-5L and PROMIS-43 short form

  % pred. FEV1 FACIT- Dyspnea mMRC dyspnea Borg dyspnea (at rest) Borg dyspnea (during 6MWT) 6MWD EQ-5D index EQ-VAS
% pred. FEV1 1        
FACIT-dyspnea -0.36 1       
mMRC dyspnea -0.29 0.59 1      
Borg dyspnea (at rest) -0.13 0.46 0.33 1     
Borg dyspnea (during 6MWT) -0.26 0.56 0.48 0.36 1    
6MWD 0.28 -0.44 -0.45 -0.25 -0.34 1   
EQ-5D index 0.19 -0.58 -0.48 -0.38 -0.37 0.46 1  
EQ-VAS 0.26 -0.43 -0.41 -0.34 -0.35 0.29 0.55 1
P-PF 0.32 -0.71 -0.62 -0.39 -0.58 0.56 0.68 0.51
P-A -0.09 0.42 0.23 0.27 0.23 -0.19 -0.46 -0.33
P-D -0.08 0.45 0.25 0.26 0.29 -0.19 -0.49 -0.34
P-F -0.09 0.58 0.43 0.38 0.42 -0.29 -0.55 -0.48
P-SD 0.02 0.35 0.28 0.26 0.23 -0.10 -0.37 -0.31
P-SR 0.18 -0.57 -0.41 -0.37 -0.42 0.37 0.54 0.47
P-PI -0.01 0.41 0.33 0.31 0.22 -0.29 -0.65 -0.37
P-P 0.01 0.35 0.26 0.27 0.21 -0.29 -0.58 -0.33
  1. 6MWD = six-minute walk distance; 6MWT = six-minute walk test; FACIT = Factional Assessment of Chronic Illness Therapy; FEV1 = forced expiratory volume in 1 second; mMRC = modified Medical Research Council; PROMIS = Patient Reported Outcomes Measurement Information System; P-PF = PROMIS-Physical Function; P-A = PROMIS-Anxiety; P-D = PROMIS-Depression; P-F = PROMIS-Fatigue; P-SD = PROMIS-Sleep Disturbance; P-PI = PROMIS-Pain Interference; P-P = PROMIS-Pain intensity scale; P-SR = PROMIS-Satisfaction with participation in Social Roles.
  2. Spearman’s rank correlation coefficient p > 0.05 (not significant).