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. 2019 Jan 31;3(1):e000340. doi: 10.1136/bmjpo-2018-000340

Table 1.

Proportion of children who were included or missing at sweep 7 by demographic characteristics

Missing from sample (%) Included in sample (%)
Family type
 Lone parent 29.7 13.2
 Living with partner 70.3 86.8
Age of mother at birth of cohort child
 Under 20 12.6 3.8
 20–29 49.5 35.6
 30–39 35.3 56.6
 40 or older 2.6 4.0
Income quintile
 Bottom quintile 31.0 14.5
 2 22.7 19.3
 3 16.0 19.5
 4 16.2 24.4
 Top quintile 14.1 22.3
Scottish Index of Multiple Deprivation Quintiles
 5—Most deprived 32.1 17.5
 4 19.4 17.1
 3 16.7 21.7
 2 17.7 21.6
 1—Least deprived 14.2 22.1
Education level of mother
 No qualifications 14.7 6.2
 Standard Grades or above 26.1 15.1
 Highers or above 59.2 78.7
Child ethnic group
 White 93.5 96.5
 Non-white 6.5 3.5
Child sex
 Male 53.1 50.6
 Female 46.9 49.4
Urban/rural indicator
 Large urban 40.1 36.7
 Other urban 34.6 29.4
 Small accessible towns 9.2 9.8
 Small remote towns 2.5 3.2
 Accessible rural 10.5 15.4
 Remote rural 3.1 5.4
Base 1761 3456