The Health & Lifestyle Questionnaire (HLQ) was launched in 2014 to better describe TRA membership through the publication of summary statistics to both the twin and the researcher communities.

The HLQ enables identification of potential participants for specific research studies to reduce costs to researchers and unnecessary approaches to ineligible TRA members. It also enhances fast-track research by providing de-identified data to researchers for ethically approved research analyses.

The questionnaire contained demographic questions and covered a broad range of health conditions and risk factors.
• Zygosity
• Education
• Income, employment
• Nationality
• General health, medical conditions, lifestyle
• Screening for breast, colon and prostate cancer

Documents available for download:

An abstract relating to the use of the questionnaire

A reference document for the junior questionnaire

A reference document for the adult questionnaire

The data dictionary for the adult questionnaire

The data dictionary for the junior questionnaire



Twins Research Australia

Address: 3/207 Bouverie St
Carlton, Vic 3010


ABN: 84 002 705 224

Twins Research Australia has received continuous funding from the National Health and Medical Research Council (NHMRC) since 1981, most recently through a Centre of Research Excellence Grant (2015-2022). TRA is administered by the University of Melbourne.

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