Table 1

Description of Childhood Social and Economic Circumstances Domains and Scales

Domain/scaleDefinitionNumber of itemsMean (SD)Possible rangeObserved rangeαMeaning of high score
Home and family circumstances
 Number of times renting during 4 periods of childhood (0–4)Rented during 4 periods of childhood: 0–5, 6–9, 10–14, 15–1842.07(1.62)0–40–4More periods of renting
 Number of times moved (categories)0, 1, 2, 3, 4+13.31 (1.48)1–51–5More moves
 Raised by 2 parents (1/0)Raised by both parents vs raised by one parent, a grandparent, a parent and a step parent, or some other combination of adults10.670–10–1Raised by 2 parents
 DeprivationPeriods when their family was just surviving or when there was not enough food to eat or both20.79 (0.77)0–20–2More periods of disadvantage
 Family financial statusRating of family's financial status as 1=pretty well off, 2=about average, 3=poor12.28 (0.61)1–31–3Poorer status
Neighbourhood
 Neighbourhood type1=upper middle class
2=middle
3=lower middle class
4=working class
13.02 (1.00)1–41–4Lower income type
 Neighbours who are same ethnicityHow many neighbours were the same race/ethnicity as themselves with 1=none, 2=a few, 3=about half and 4=all or most23.32(0.97)1–41–4Higher proportion same ethnicity
Work and money
 Age began working regularly116.11(3.19)7–35Older age
 Summer work for payExtent of working for pay during middle- and high school summers22.49 (1.10)1–41–40.63More work during summer
Potential for advancement through schooling
 Parent attitude towards educationExtent to which parents paid attention to grades, stressed importance of education23.16 (0.98)1–41–40.82More support for schooling
 Perceived importance of educationRespondent's sense that schooling is important to get a good job13.44 (0.92)1–41–4More important
School quality and content
 Perceived school qualityRating of quality of middle and high school education22.99 (0.77)1–41–40.76Higher perceived quality
 Extracurricular activities—high schoolNumber of years on organised sports, school clubs, school organisations32.85 (2.75)0–90–90.59More extracurricular
 Music extracurricular activities—high schoolNumber of years in band/choir or taking music lessons21.28 (1.98)0–60–60.71More music activities
Influence and support of adults
 Extent of adult supportExtent of encouragement/support from parents, grandparents, aunts/uncles, teachers, counsellors, clergy/minister, other adult during age 5–1879.85 (5.20)0–210–210.74More support
 Extent of adult discouragementExtent of discouragement from parents, grandparents, aunts/uncles, teachers, counsellors, clergy/minister, other adult during age 5–1871.85 (2.73)0–210–160.67More discouragement
Leisure activities
 Summer travelExtent of summer camp, family trips, family scenic rental during middle and high school summers62.95 (3.61)0–150–150.78More summers of travel
 Summer readingExtent of reading during middle and high school summers22.83 (1.14)1–41–40.90More reading
 Summer social activitiesExtent of playing with friends, watching TV, playing on organised sports teams, during middle- and high school summers62.24 (0.68)1–41–40.70More social/leisure