Maelstrom Research Staging

NZHWR_Wave1

Networks -

Variables -

Associated study NZHWR Contingency Table

Population

NZHWR population

The NZHWR population comprises older adults who live in New Zealand and were randomly sampled from the New Zealand Electoral Roll.

Selection Criteria

Minimum age

Maximum age

Newborns

Twins

Countries

New Zealand

Ethnic Origin

Health Status

Supplementary Information about selection criteria

Participants must be registered on the New Zealand electoral roll and have a New Zealand postal address to be selected. At Wave 1 (2006), New Zealanders aged 55 to 77 (born 1936-1952) were recruited. Additional cohorts have been recruited in 2009 (born 1920-1960), in 2010 (born 1926-1960), in 2014 (born 1949-1959), in 2016 (born 1951-1961), in 2018 (born 1961-1963), in 2020 (born 1954-1964) and in 2022 (born 1956-1966)

Recruitment

Sources of recruitment

General population
Specific population

General Population

Selected sample

Specific Population

Other specific population : Māori

Supplementary Information

Participants were randomly sampled from the electoral roll. In Waves 1 (2006), 3 (2010), 5 (2014), 6 (2016), 7 (2018), 8 (2020) and 9 (2022) an oversample of persons indicated on the electoral roll as being of Māori descent was undertaken to ensure that this sub-group is represented adequately.

Number of Participants

Number of Participants: No Limit
Number of Participants with Biological Samples
Supplementary Information about selection criteria: Wave 1 (2006) : 6661 participants
Wave 2 (2008) : 2474 participants
Wave 3 (2010) : 3311 participants
Wave 4 (2012) : 2984 participants
Wave 5 (2014) : 3052 participants
Wave 6 (2016) : 4029 participants
Wave 7 (2018) : 3963 participants
Wave 8 (2020) : 4350 participants
Wave 9 (2022) : TBC

More info

Data Collection Event

NZHWR - Wave 1

Data was collected via postal questionnaire. The questionnaire included sections on health (SF-36 health survey; chronic disease; alcohol consumption (AUDIT-C); health care utilisation; tobacco use; physical activity), social support (Social Provisions Scale; Practitioners Assessment of Network Type), childcare, caregiving, employment, income and economic living standards (ELSI-SF), retirement, and demographic information. Participants identifying as Māori were asked to complete an additional section about genealogy/relationships and cultural identity.

More info

Collected Dataset / NZHWR_Wave1

NZHWR_Wave1

Population

NZHWR population

Data Collection Event

NZHWR - Wave 1

Files

Variables Classifications