Summary of Measures Used in the Current Analyses

Demographic measures*
    AgeIn years
    Gender% female
    EducationHighest level attained, categorized into less than high school, high school, some postsecondary, diploma, or degree
    IncomeHousehold income, categorized into $0–29 999, $30 000–59 999, or $60 000 or more
    Work for payYes/no
    Hours per week workedCategorized into <30 h (part-time) or ≥30 h (full-time)
    Main activityOne of caregiving, working for pay, caring and working, school, or other
Psychological health and support
    Distress6 items (eg, sad, nervous, or fidgety); range of scale: 0–24; subset of items from the CIDI related to distress (MH Q1A to Q1F)41
    Chronicity of distressRange of scale: 1–8; subset of items from the CIDI related to chronicity of distress (MH Q1G to Q1L) (eg, over the past month, have these symptoms been occurring more often than usual, about the same, or less often than usual)41
    Emotional problemsMcMaster HUI in NPHS41 (describes self as being usually happy and interested in life, somewhat happy, etc.)
    Cognitive problemsHUI41 (ie, memory or problem solving)
    Social support6 items; range of scale: 0–24; abbreviated version of the Social Provisions Scale42
    Frequency of contactsItems summarize persons in the caregiver's social network and the average number of caregiver contacts in the past 12 mo with family, friends, and neighbors (SUP-Q7A to SUP-Q7H), Social Network and Frequency of Contact Index41
    Family functioning13 items; global assessment of family functioning and the quality of relationships between parents or partners from the Family Assessment Device43
Physical health measures
    Chronic conditionsPresence of 14 different chronic conditions (eg, food allergies, asthma, or back problems), defined as lasting ≥6 mo and diagnosed by a health professional49
    No. of chronic conditionsCategorized into 0, 1, 2, or ≥3
    Physical health problemsCategorized to some/none, subset from HUI41 (vision, hearing, mobility, or presence of pain)
  • CIDI indicates Composite International Diagnostic Interview, HUI, Health Utility Index.

  • * Data collected as part of a self-completed questionnaire.

  • Data collected during interviews.