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Table 1 Characteristics of participants included in the overall analysis vs. those who are excluded

From: Cross-sectional associations between the screen-time of parents and young children: differences by parent and child gender and day of the week

  Included Excluded Difference
  n Mean SD n Mean SD Mean 95% CI p
Fathers          
Age (years) 493 40.0 5.8 52 36.6 6.2 -3.5 -5.1 to -1.8 <0.001
BMI score 493 26.2 3.9 55 26.8 3.7 0.61 -0.49 to 1.7 0.276
IMD scorea 493 12.4 10.2 81 16.3 13.1 3.9 1.4 to 6.4 0.002
Mothers          
Age (years) 793 37.4 5.5 63 36.1 5.5 -1.4 -2.8 to 0.05 0.058
BMI 793 25.1 4.5 72 24.5 4.4 -0.52 -1.6 to 0.57 0.346
IMD scorea 793 14.4 12.2 158 21.1 16.2 6.7 4.5 to 8.9 <0.001
Children          
Age (years) 990 6.0 0.43 309 6.0 0.43 0.007 -0.04 to 0.06 0.786
BMI-z scoreb 978 0.23 0.93 293 0.38 1.00 0.15 0.02 to 0.28 0.016
IMD scorea 990 14.0 12.0 181 20.2 15.9 6.2 4.2 to 8.2 <0.001
Boys          
Age (years) 520 6.0 0.43 144 6.0 0.23 -0.003 -0.08 to 0.07 0.941
BMI-z scoreb 512 0.25 0.96 135 0.34 0.95 0.09 -0.10 to 0.27 0.350
IMD score 520 14.3 12.2 94 19.0 15.4 4.7 1.8 to 7.5 0.001
Girls          
Age (years) 470 6.0 0.43 165 6.0 0.16 0.02 -0.05 to 0.08 0.627
BMI-z scoreb 466 0.21 0.90 158 0.42 1.1 0.21 0.04 to 0.38 0.014
IMD score 470 13.7 11.8 87 21.6 16.4 7.9 5.0 to 10.8 <0.001
Weight categories n Normal weight (%)c Overwt (%) Obese (%) n Normal weight (%)c Overwt (%) Obese (%)  
All children 978 87.1 10.0 2.9 293 78.2 17.4 4.4 0.001
Boys 512 90.4 7.2 2.3 135 83.7 14.1 2.2 0.042
Girls 466 83.5 13.1 3.4 158 73.4 20.3 6.3 0.019
  1. aA high value indicates greater deprivation; bChild BMI was standardized for age; cIncluding underweight.