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Table 4 Sensitivity and specificity of the IPAQ with the optimum cut off point at 0.67 (N = 226)

From: Clinical assessment of the physical activity pattern of chronic fatigue syndrome patients: a validation of three methods

  

Actometer typology

 
  

Passive

Active

 

IPAQ

Passive (N/%)

46/(70.1%)

60/(37.3%)

106 (47%)

 

Active (N/%)

19/(29.3%)

101/(62.7%)

120 (53%)

  

65/(100%)

161/(100%)

226 (100%)

  1. Predictive value of a positive test (sensitivity) PV+ = 46/65 = 0.701
  2. Predictive value of a negative test (specificity) PV- = 101/161 = 0.627
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Health and Quality of Life Outcomes

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