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Table 3 Assessment qualities of the staging algorithm in terms of physical activity measure

From: Testing the validity of a stage assessment on health enhancing physical activity in a chinese university student sample

Physical activity

Correctly Classified…

Correctly Classified…

Sensitivity

Specificity

AUC (SE)

Effect size d

 

As non-active

As active

    

Strenuous and moderate behavior measure (energy expenditure)

89 % NC = 89 %

50 % F = 41 %

71 %

76%a

0.82 (.01)*b

1.29

C = 91 %

E = 52 %

P = 86 %

Ma = 68 %

Strenuous, moderate, and mild behavior measure (energy expenditure)

74 % NC = 76 %

84 % F = 76 %

64 %

89%a

0.86 (.01)*b

1.53

C = 76 %

E = 92 %

P = 68 %

Ma = 90 %

  1. Note. NC = Not-considering; C = Considering; P = Preparing; F = Fluctuating; E = Exploring; Ma = Maintaining; Subscripts indicate significant differences between proportions and the AUC. AUC = area under the curve; SE = standard error (computed with receiver operator curves)
  2. a Z = 5.93, P < .001; b Z (1012) = 4.42, P < .001
  3. *P < .05