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Table 5 Correlation matrix of the associations between pulmonary function (% predicted) and dyspnoea, ability to take deep breaths and cough 1 year after cardiac surgery (n = 150)

From: Pulmonary function and health-related quality of life 1-year follow up after cardiac surgery

Pulmonary function (percentage predicted)

Dyspnoea (mMRC)

Ability to take deep breaths (NRS)

Ability to cough (NRS)

VC

−0.17 (p = 0.054)

−0.14 (p = 0.105)

−0.15 (p = 0.090)

FVC

−0.19* (p = 0.038)

−0.16 (p = 0.065)

−0.18* (p = 0.043)

FEV1

−0.18 (p = 0.050)

−0.19* (p = 0.030)

−0.19* (p = 0.030)

IC

−0.09 (p = 0.340)

−0.19* (p = 0.029)

−0.15 (p = 0.087)

  1. mMRC, Modified Medical Research Council dyspnea scale; NRS: numeric rating scale
  2. *P-value < 0.05 was considered significant