Table 1.

InterRAI Home Care and interRAI Contact Assessment sociodemographic variables, health and psychosocial indicators, and health services utilization and their re-coding

Variables	Categories in interRAI Home Care	Categories in interRAI Contact Assessment	Re-coding
Sociodemographic factors
Age	Continuous variable	Continuous variable	Categorise continuous variable to 1 = age 40–64, 2 = age 65–79 and 3 = age 80+
Gender	▪ Female ▪ Male ▪ Indeterminate ▪ Unknown	▪ Female ▪ Male ▪ Indeterminate ▪ Unknown	No change
Ethnicity	▪ European not further defined ▪ NZ European ▪ Other European ▪ Māori ▪ Pacific peoples not further defined ▪ Samoan ▪ Cook Island Māori ▪ Tongan ▪ Niuean ▪ Tokelauan ▪ Fijian ▪ Other Pacific peoples ▪ Asian not further defined ▪ Southeast Asian ▪ Chinese ▪ Indian ▪ Other Asian ▪ Middle Eastern ▪ Latin American/ Hispanic ▪ African (or any group of African origin) ▪ Other ethnicity ▪ Don’t know ▪ Refused to answer ▪ Response unidentifiable ▪ Not stated	▪ European not further defined ▪ NZ European ▪ Other European ▪ Māori ▪ Pacific peoples not further defined ▪ Samoan ▪ Cook Island Māori ▪ Tongan ▪ Niuean ▪ Tokelauan ▪ Fijian ▪ Other Pacific peoples ▪ Asian not further defined ▪ Southeast Asian ▪ Chinese ▪ Indian ▪ Other Asian ▪ Middle Eastern ▪ Latin American/ Hispanic ▪ African (or any group of African origin) ▪ Other ethnicity ▪ Don’t know ▪ Refused to answer ▪ Response unidentifiable ▪ Not stated	Re-code to 1 = European, 2 = Maori, 3 = Pacific, 4 = Asian, 5 = MELAA (Middle Eastern Latin American and African), 6 = Other
Living arrangement	▪ Alone ▪ With spouse/partner only ▪ With spouse/partner and other(s) ▪ With child (not spouse/partner) ▪ With parent(s) or guardian(s) ▪ With sibling(s) ▪ With other relative(s) ▪ With non-relative(s)	▪ Alone ▪ With spouse/partner only ▪ With spouse/partner and other(s) ▪ With child (not spouse/partner) ▪ With parent(s) or guardian(s) ▪ With sibling(s) ▪ With other relative(s) ▪ With non-relative(s)	Re-code to 1 = Alone, 2 = With spouse/partner only, 3 = Other (With spouse/partner and other(s) or With child (not spouse/partner) or With parent(s) or guardian(s) or With sibling(s) or With other relative(s) or With non-relative(s))
Domicile code	Domicile code of usual living arrangement	Domicile code of usual living arrangement	Re-code to 1 = Main urban areas, 2 = Satellite urban areas, 3 = Independent urban areas, 4 = Rural areas with high urban influence, 5 = Rural areas with moderate urban influence, 6 = Rural areas with low urban influence, 7 = Highly rural/remote areas, 8 = Area outside urban/rural profile.
Residential status	▪ Private home/apartment/rented room ▪ Board and care ▪ Assisted living or semi-independent living ▪ Mental health residence—e.g., psychiatric group home ▪ Group home for persons with physical disability ▪ Setting for persons with intellectual disability ▪ Psychiatric hospital/unit ▪ Homeless (with or without shelter) ▪ Long-term care facility (nursing home) ▪ Rehabilitation hospital/unit ▪ Hospice facility/palliative care unit ▪ Acute care hospital ▪ Correctional facility ▪ Other	▪ Private home/apartment/rented room ▪ Board and care ▪ Assisted living or semi-independent living ▪ Mental health residence—e.g., psychiatric group home ▪ Group home for persons with physical disability ▪ Setting for persons with intellectual disability ▪ Psychiatric hospital/unit ▪ Homeless (with or without shelter) ▪ Long-term care facility (nursing home) ▪ Rehabilitation hospital/unit ▪ Hospice facility/palliative care unit ▪ Acute care hospital ▪ Correctional facility ▪ Other	Re-code to 1 = Private home/apartment/rented room, 2 = Homeless (with or without shelter), 3 = Other (Board and care or Assisted living or semi-independent living or Mental health residence—e.g., psychiatric group home or Group home for persons with physical disability or Setting for persons with intellectual disability or Psychiatric hospital/unit or Long-term care facility (nursing home) or Rehabilitation hospital/unit or Hospice facility/palliative care unit or Acute care hospital or Correctional facility or Other)
Physical/Clinical factors
Self-reported health	▪ Excellent ▪ Good ▪ Fair ▪ Poor ▪ Could/would not respond	▪ Excellent ▪ Good ▪ Fair ▪ Poor ▪ Could/would not respond	No change
Cognitive skills for daily decision making	▪ Independent ▪ Modified independence ▪ Minimally impaired ▪ Moderately impaired ▪ Severely impaired ▪ No discernable consciousness, coma	▪ Independent ▪ Modified independent or any impairment	interRAI-HC Re-code to 1 = Independent, 2 = Not fully independent (Modified independence or Minimally impaired or Moderately impaired or Severely impaired or No discernable consciousness, coma) interRAI-CA 1 = Independent, 2 = Not fully independent (Modified independent or any impairment)
Change in decision-making (as compared to 90 days or since last assessment)	▪ Improved ▪ No change ▪ Decline ▪ Uncertain	▪ Improved ▪ No change ▪ Decline ▪ Uncertain	No change
Falls	▪ Falls: in last 30 days  - No falls  - 1 fall  - ≥2 falls ▪ Falls: 31–90 days ago  - No falls  - 1 fall  - ≥2 falls	▪ No fall in last 90 days ▪ 1 or more falls in the last 90 days	interRAI-HC Re-code to 1 = No fall in last 90 days (No falls in last 30 days or No falls 31–90 days ago), 2 = 1 or more falls in last 90 days (≥1 falls in last 30 days or ≥ 1 falls 31–90 days ago) interRAI-CA 1 = No fall in last 90 days, 2 = 1 or more falls in last 90 days
Decrease in amount of food or fluid usually consumed	▪ Yes ▪ No	▪ Yes ▪ No	No change
Weight loss of 5% in last 30 days or 10% in last 180 days	▪ Yes ▪ No	▪ Yes ▪ No	No change
ADL self-performance  ▪ Bathing  ▪ Personal hygiene  ▪ Dressing lower body  ▪ Locomotion	▪ Independent ▪ Independent, setup help only ▪ Supervision ▪ Limited assistance ▪ Extensive assistance ▪ Maximal assistance ▪ Total dependence ▪ Activity did not occur during entire period	▪ Independent ▪ Supervision or any physical assistance	interRAI-HC Re-code to 1 = Independent, 2 = Not fully independent (Independent, setup help only or Supervision or Limited assistance or Extensive assistance or Maximal assistance or Total dependence or Activity did not occur during entire period) interRAI-CA 1 = Independent, 2 = Not fully independent (supervision or any physical assistance)
Change in ADL status	▪ Improved ▪ No change ▪ Declined ▪ Uncertain	▪ Improved ▪ No change ▪ Declined ▪ Uncertain	No change
IADL capacity  ▪ Meal preparation  ▪ Ordinary housework  ▪ Managing medications  ▪ Stairs	▪ Independent ▪ Setup help only ▪ Supervision ▪ Limited assistance ▪ Extensive assistance ▪ Maximal assistance ▪ Total dependence	▪ Independent or set-up help only ▪ Supervision or any assistance during task	interRAI-HC Re-code to 1 = Independent or setup help only, 2 = Not independent (Supervision or Limited assistance or Extensive assistance or Maximal assistance or Total dependence) interRAI-CA 1 = Independent or set-up help only, 2 = Not independent (Supervision or any assistance during task)
Psychological indicators
Self-reported mood	“In the last 3 days, how often have you felt sad, depressed or hopeless?”  ▪ Not in the last 3 days  ▪ Not in the last 3 days, but often feels that way  ▪ In 1–2 of the last 3 days  ▪ Daily in the last 3 days  ▪ Could/would not respond	“In the last 3 days, have you felt sad, depressed or hopeless?”  ▪ Yes  ▪ No  ▪ Could/would not respond	interRAI-HC Re-code to 1 = Feeling depressed in last 3 days (In 1–2 of the last 3 days or Daily in the last 3 days), 2 = Not feeling depressed in last 3 days (Not in the last 3 days or Not in the last 3 days, but often feels that way), 3 = Could/would not respond interRAI-CA 1 = Yes, 2 = No, 3 = Could/would not respond
Social indicators
Primary informal helper expresses feelings of distress, anger, or depression	▪ Yes ▪ No	▪ Yes ▪ No	No change
Family or close friends report feeling overwhelmed by person’s illness	▪ Yes ▪ No	▪ Yes ▪ No	No change
Two key informal helpers (relationship to person)  ▪ Helper 1  ▪ Helper 2	▪ Child or child-in-law ▪ Spouse ▪ Partner/significant other ▪ Parent/guardian ▪ Sibling ▪ Other relative or whanau ▪ Friend ▪ Neighbour ▪ No informal helper	▪ Child or child-in-law ▪ Spouse ▪ Partner/significant other ▪ Parent/guardian ▪ Sibling ▪ Other relative or whanau ▪ Friend ▪ Neighbour ▪ No informal helper	Re-code to 1 = Spouse or Partner/significant other, 2 = Other family (Child or child-in-law or Parent/guardian or Sibling or Other relative or whānau), 3 = Friend or Neighbour, 4 = No informal helper
Two key informal helpers (lives with person)  ▪ Helper 1  ▪ Helper 2	▪ No ▪ Yes, 6 months or less ▪ Yes, more than 6 months ▪ No informal helper	▪ No ▪ Yes, 6 months or less ▪ Yes, more than 6 months ▪ No informal helper	No change
Lifestyle factors
Daily tobacco use	▪ Yes ▪ Not in last 3 days, but is usually a daily smoker ▪ No	▪ Yes ▪ Not in last 3 days, but is usually a daily smoker ▪ No	Re-code to 1 = Smoker (Yes or Not in last 3 days, but is usually a daily smoker), 2 = Non-smoker
Health services utilisation
Time since last hospital stay	▪ No hospitalisation within 90 days ▪ 31–90 days ago ▪ 15–30 days ago ▪ 8–14 days ago ▪ In the past 7 days ▪ Now in hospital	▪ No hospitalisation within 90 days ▪ 31–90 days ago ▪ 15–30 days ago ▪ 8–14 days ago ▪ In the past 7 days ▪ Now in hospital	Re-code to 1 = No hospitalisation within last 30 days (No hospitalisation within 90 days or 31–90 days ago), 2 = Hospitalisation within last 30 days (15–30 days ago or 8–14 days ago, 3 = In the past 7 days or Now in hospital)
Emergency department use (number of times in last 90 days)	Continuous variable	Continuous variable	No change

ADL Activities of daily living, IADL Instrumental activities of daily living, interRAI-CA interRAI Contact Assessment, interRAI-HC interRAI Home Care