Table 3 Correlation between different activity measures obtained from the Actiwatch and Dynaport Activity Monitor in 12 patients with chronic obstructive pulmonary disease (Evaluation 1)
Actiwatch
Mean activity scoreMean intensity of activity scoreTime spent mobile
Dynaport
Time spent moving (%)r = 0.83r = 0.76r = 0.48
95% CI 0.48 to 0.9595% CI 0.32 to 0.9395% CI −0.13 to 0.32
p = 0.001p = 0.004p = 0.118
Movement intensityr = 0.92r = 0.88r = 0.35
95% CI 0.72 to 0.9895% CI 0.63 to 0.9795% CI −0.28 to 0.77
p<0.001p<0.001p = 0.27
Movement intensity during movementr = 0.81r = 0.83r = 0.05
95% CI 0.45 to 0.9595% CI 0.49 to 0.9595% CI −0.54 to 0.61
p = 0.001p = 0.001p = 0.883
Time spent walking (%)r = −0.42r = −0.32r = −0.42
95% CI −0.8 to 0.295% CI −0.76 to 0.3195% CI −0.8 to 0.2
p = 0.171p = 0.306p = 0.169

  • Data recorded are Pearson’s correlation coefficient, 95% confidence interval of the correlation and p value.