Table 3

Variables associated with frequent disturbed sleep (at least once a week). Odds ratios (OR) adjusted for all other variables. Final model3-150

VariablesTotalNo (%)OR (95%CI)p Value
Nocturnal enuresis<0.001
 No enuresis12 026183  (1.5)1.00
 Less than once a month93018 (1.9)1.03  (0.62–1.69)
 At least once a month but less than once a week56117 (3.0)1.60 (0.95–2.68)
 At least once a week67238 (5.7)2.55 (1.75–3.72)
 Not known1836 (3.3)1.47 (0.62–3.50)
Wheeze<0.001
 No wheeze12 129174 (1.4)1.00
 Occasional wheeze1 41228 (2.0)1.43 (0.95–2.16)
 Persistent wheeze66752 (7.8)4.42 (3.17–6.13)
 Not known how often1648 (4.9)2.75 (1.29–5.89)
Ethnic backgound0.015
 White (Scottish)3 78339 (1.0)1.00
 White (English)5 78888 (1.5)1.25 (0.85-1.84)
 White (English inner city areas)1 72034 (2.0)1.01 (0.62–1.64)
 Afro-Caribbean73117 (2.3)1.25 (0.68–2.30)
 Indian subcontinent1 77263 (3.6)2.20 (1.34–3.60)
 Others57821 (3.6)2.14 (1.19–3.84)
Mother’s education<0.001
 College or university3 74544 (1.2)1.00
 Secondary education8 140129 (1.6)1.14 (0.79–1.64)
 Primary education or no education1 46766 (4.5)2.41 (1.51–3.84)
 Not known1 02023 (2.3)2.01 (1.03–3.89)
Father’s social class0.013
 Non-manual3 50332 (0.9)1.00
 Skilled manual4 21167 (1.6)1.36 (0.87–2.12)
 Semiskilled and unskilled2 30147 (2.0)1.44 (0.89–2.32)
 Not known4 357116 (2.7)1.91 (1.25–2.92)
Mother’s smoking at home (cigarettes per day)0.012
 None9 882162 (1.6)1.00
 1–91 31634 (2.6)1.93 (1.29–2.88)
 10–191 77830 (1.7)1.19 (0.78–1.83)
 ⩾2085523 (2.7)1.87 (1.15–3.05)
 Not known54113 (2.4)1.34 (0.74–2.45)
Household overcrowding (No of people per room)0.042
 <15 48487 (1.6)1.00
 1–1.496 17795 (1.5)0.77 (0.56–1.05)
 ⩾1.51 74562 (3.6)1.15 (0.79–1.68)
 Not known96618 (1.9)0.59 (0.30–1.17)

  • ↵3-150 Adjusted for age.

  • CI = confidence interval.