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Table 3

Pearson correlations between change in accelerometry-measured and self-reported physical activity

Accelerometry-measured total MVPAAccelerometry-measured MVPA in bouts ≥10 min
Change from baseline to 1 yearChange from baseline to 4 yearsChange from baseline to 1 yearChange from baseline to 4 years
Accelerometry-measured total MVPA     
 Change from baseline to 1 year     
 Change from baseline to 4 years r = 0.191    
  P < 0.0001    
  N = 1,428    
Accelerometry-measured MVPA in bouts ≥10 min     
 Change from baseline to 1 year r = 0.896 r = 0.149   
  P < 0.0001 P < 0.0001   
  N = 1,626 N = 1,428   
 Change from baseline to 4 years r = 0.097 r = 0.938 r = 0.113  
  P = 0.0002 P < 0.0001 P < 0.0001  
  N = 1,428 N = 1,780 N = 1,428  
Self-reported physical activity     
 Change from baseline to 1 year r = 0.114 r = 0.026 r = 0.155 r = 0.023 
  P < 0.0001 P = 0.2888 P < 0.0001 P = 0.3514 
  N = 1,591 N = 1,710 N = 1,591 N = 1,710 
 Change from baseline to 4 years r = 0.033 r = 0.031 r = 0.070 r = 0.041 
  P = 0.1944 P = 0.1967 P = 0.0064 P = 0.0828 
  N = 1,511 N = 1,762 N = 1,511 N = 1,762 
Accelerometry-measured total MVPAAccelerometry-measured MVPA in bouts ≥10 min
Change from baseline to 1 yearChange from baseline to 4 yearsChange from baseline to 1 yearChange from baseline to 4 years
Accelerometry-measured total MVPA     
 Change from baseline to 1 year     
 Change from baseline to 4 years r = 0.191    
  P < 0.0001    
  N = 1,428    
Accelerometry-measured MVPA in bouts ≥10 min     
 Change from baseline to 1 year r = 0.896 r = 0.149   
  P < 0.0001 P < 0.0001   
  N = 1,626 N = 1,428   
 Change from baseline to 4 years r = 0.097 r = 0.938 r = 0.113  
  P = 0.0002 P < 0.0001 P < 0.0001  
  N = 1,428 N = 1,780 N = 1,428  
Self-reported physical activity     
 Change from baseline to 1 year r = 0.114 r = 0.026 r = 0.155 r = 0.023 
  P < 0.0001 P = 0.2888 P < 0.0001 P = 0.3514 
  N = 1,591 N = 1,710 N = 1,591 N = 1,710 
 Change from baseline to 4 years r = 0.033 r = 0.031 r = 0.070 r = 0.041 
  P = 0.1944 P = 0.1967 P = 0.0064 P = 0.0828 
  N = 1,511 N = 1,762 N = 1,511 N = 1,762 
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