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

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

	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)

Note: S1 Sweep 1 (age 9 months), S2 Sweep 2 (age 3 years). Estimates are weighted and Ns are unweighted

ISSN: 1471-2458