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Table 1 Descriptives of study variables in the analytic sample (n = 11,625)

From: The quality of air outside and inside the home: associations with emotional and behavioural problem scores in early childhood

  n %
Child
 Female 5706 49.26
Ethnicity
 White 9550 86.65
 Black 424 2.90
 Indian 333 1.89
 Pakistani/Bangladeshi 720 3.67
 Mixed 420 3.62
 Other 173 1.26
 Low birth weight 794 6.83
Parent/household (S2)
 Mother is university-educated 3748 33.69
 Mother has good general health 9371 81.52
Indoor air quality (S1)
 Damp or condensation problem 1598 14.22
 Secondhand smoke 1397 12.36
Neighbourhood (S1)
 Urbanicity 9336 83.01
  n M (SD)
Child (S2)
 Emotional problems 11,549 1.36 (1.41)
 Conduct problems 11,569 2.84 (1.98)
 Hyperactivity problems 11,463 3.97 (2.26)
 Age (years) 11,625 3.13 (0.19)
Parent/household (S2)
 Household income 10,924 324.01(196.36)
 Maternal psychological distress 9660 3.28 (3.50)
Neighbourhood (S1)
 NO2 deciles 11,035 7.27 (2.27)
 SO2 deciles 11,035 6.51 (2.34)
 Green space deciles 11,035 4.27 (2.33)
  1. Note: S1 Sweep 1 (age 9 months), S2 Sweep 2 (age 3 years). Estimates are weighted and Ns are unweighted