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Table 3 Correlations of screen time with outdoor play in children at eight time point

From: Prevalence, correlates, and trajectory of screen viewing among Chinese children in Changsha: a birth cohort study

  ST12 ST18 ST24 ST36 ST42 ST48 ST54 ST60 PA12 PA18 PA24 PA36 PA42 PA48 PA54 PA60
ST12 1                
ST18 0.269** 1               
ST24 0.157** 0.377** 1              
ST36 0.132** 0.163** 0.315** 1             
ST42 0.203** 0.267** 0.246** 0.427** 1            
ST48 0.188** 0.191** 0.264** 0.308** 0.565** 1           
ST54 0.134** 0.187** 0.247** 0.291** 0.434** 0.519** 1          
ST60 −0.055 0.076 0.068 0.087 −0.008 0.018 0.07 1         
PA12 0.027 0.019 −0.029 0.002 0.066 0.103* 0.076 0.026 1        
PA18 0.067 −0.074 −0.081** −0.068 −0.06 −0.049 0.039 −0.001 0.307** 1       
PA24 0.067 0 −0.03 0.019 −0.007 0.015 −0.04 −0.032 0.226** 0.264** 1      
PA36 0.01 −0.014 −0.008 0.052 −0.05 − 0.071 − 0.003 0.087 0.225** 0.201** 0.27** 1     
PA42 0.052 −0.013 0.038 −0.069 0.099* 0.11* 0.004 −0.01 0.088* 0.119** 0.104* 0.091* 1    
PA48 −0.04 − 0.102* − 0.088* − 0.127** − 0.062 0.026 − 0.05 −0.009 0.057 0.114** 0.097* 0.044 0.227** 1   
PA54 −0.116** − 0.066 −0.012 − 0.006 −0.016 − 0.047 0.055 0.154* 0.013 −0.051 −0.055 0.098* 0.011 0.207** 1  
PA60 0.043 0.124* 0.002 0.016 0.002 0.063 0.03 0.085 0.02 −0.005 −0.059 0.026 −0.01 − 0.103 0.079 1
  1. Abbreviations: PA Outdoor activity time, ST Screen time
  2. **P <  0.01
  3. *P <  0.05