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Table 4 Kendall Tau b correlation coefficients for stability of daily TV and VG time between ages 5, 8, 11, and 13

From: Tracking of TV and video gaming during childhood: Iowa Bone Development Study

  Age 5-8 Age 5-11 Age 5-13 Age 8-11 Age 8-13 Age 11-13
  Boys: n = 193 Boys: n = 171 Boys: n = 168 Boys: n = 161 Boys: n = 158 Boys: n = 152
  Girls: n = 222 Girls: n = 211 Girls: n = 189 Girls: n = 205 Girls: n = 185 Girls: n = 180
TV Viewing       
   Boys 0.40*** 0.20** 0.24*** 0.28*** 0.30*** 0.29***
   Girls 0.44*** 0.27*** 0.09 0.41*** 0.28*** 0.25***
Video Gaming       
   Boys 0.16* 0.15* 0.04 0.13 0.18** 0.15*
   Girls 0.35*** 0.15* 0.12 0.32*** 0.03 0.27***
  1. * p < 0.05; ** p < 0.01; *** p < 0.001