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Table 1 Sociodemographic characteristics of families at 2-year postnatal in the Elfe birth cohort

From: Sociodemographic and behavioural factors of adherence to the no-screen guideline for toddlers among parents from the French nationwide Elfe birth cohort

   N % Weighted %
Overall sample 13,117 100,0 100,0
Maternal age
   ≤ 30 years 4,216 32.2 38.7
  31–40 years 8,112 61.9 55.2
   > 40 years 774 5.9 6.1
  Missing 15 0.1  
Mother educational attainment
  Below high school 2,265 17.3 29.2
  Completed high school-2 years university 5,275 40.2 39.2
   ≥ 3 years university 5,312 40.5 31.6
  Missing 265 2.0  
Father educational attainment
  Below high school 3,008 22.9 33.6
  Up to 2 years university 4,600 35.1 37.9
   ≥ 3 years university 4,175 31.8 28.4
  Missing 1,334 10.2  
Type of household
  Parents living together 12,529 95.5 92.0
  Parents not living together 571 4.4 8.0
  Missing 17 0.1  
Parental migration status
  No immigrant parent 10,850 82.7 74.1
  1 immigrant parent 1,585 12.1 15.2
  2 immigrant parents 665 5.1 10.7
  Missing 17 0.1  
Household income
  First quintile 2,414 18.4 31.3
  Second quintile 2,530 19.3 21.5
  Third quintile 2,441 18.6 17.3
  Fourth quintile 2,473 18.9 15.9
  Fifth quintile 2,523 19.2 14.0
  Missing 736 5.6  
Parental employment status
  Both employed 9,895 75.4 70.1
  Only father employed 1,854 14.1 21.4
  Only mother employed 494 3.8 4.5
  Both inactive 253 1.9 4.0
  Missing 621 4.7  
Area of residence
  Urban 8,141 62.1 64.0
  Suburban 4,480 34.2 32.4
  Isolated 418 3.2 3.6
  Missing 78 0.6  
Birth order
  First born 5,940 45.3 42.7
  Later born 7,177 54.7 57.4
Child sex
  Boy 6,659 50.8 50.5
  Girl 6,458 49.2 49.5
Season of survey
  Spring 1,998 15.2 21.9
  Summer 3,350 25.5 26.4
  Autumn 3,762 28.7 26.5
  Winter 4,007 30.5 25.3
Number of siblings
  0 4,988 38.0 36.1
  1–2 7,415 56.5 57.0
   > 2 713 5.4 6.9
  Missing 1 0.0  
Type of childcare
  Parents 3,759 28.7 38.3
  Grand parents 581 4.4 4.3
  Childminder/nanny 5,894 44.9 37.4
  Day-care centre 2,882 22.0 20.0
  Missing 1 0.0  
Adherence to the no-screen guideline 1,809 13.8 13.5
Mean maternal screen time (min/day) 12,874 153 161 (158–165)
Mean paternal screen time (min/day) 10,653 155 157 (154–160)