Paid and unpaid hours for helpers assisting sample members with mobility, self-care or household tasks were constructed at the caregiver level and then summed to the sample person level.
Of the 6411 sample persons receiving any help with any activity for any reason, 738 sample persons were missing information on either paid or unpaid hours for all or part of their care network (12%). Among the 2499 sample persons defined as receiving assistance with self-care or mobility or with household activities related to health or functioning, 311 were missing information on either paid or unpaid hours for all or part of their care network (12%).
For the caregiver(s) with missing information we imputed mean hours of care, based on the sample person’s age group, sex, a hierarchal measure of care (mobility/self-care/household activities/other activities) and for unpaid caregivers their relationship to the recipient (spouse/partner or child, other relative, other non-relative). Altogether 43 (4%) of paid and 1041 (10%) of unpaid caregivers were filled in this way; six additional caregivers with no relationship information had informal hours imputed based on respondent characteristics alone.
Among sample persons receiving unpaid assistance, the weighted mean for unpaid hours was 98.6 before and 100.4 after imputation. Among those receiving non-staff paid assistance, the weighted mean for paid hours was 81.7 before and 82.9 after imputation. Among those receiving either non-staff paid or unpaid assistance, the weighted mean for total hours was 105.7 before and 107.6 after imputation.