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PRISMA checklist. (PDF 214Â kb)

Search strategy and search terms. (PDF 287Â kb)

Standardised data extraction template. (PDF 82Â kb)

Flow diagram of inclusions and exclusions based on CONSORT recommendations. (DOCX 107Â kb)

Binary logistic regression analysis comparing Prompt/Non-Prompt v AD module/non-AD module groups AD completions (NÂ =Â 189). (DOCX 13Â kb)

Level of comfort individual has with using computer on a scale of 0â 100%. (DOCX 2170Â kb)

Best time for a Reminder. (DOCX 1127Â kb)

Demographics of 189 Participants in RCT. (DOCX 20Â kb)

Pre-survey for RCT. (DOCX 22Â kb)

Primary outcomes of individuals and individual documents completed per group from Pre-survey to Post-survey. (DOCX 14Â kb)

Type of Person with whom ADs were Discussed (NÂ =Â 147). (DOCX 1069Â kb)

Post Survey (DOCX 21Â kb)

Diagram of 2 × 2 factorial design of RCT. (DOCX 12 kb)

Document Completions influenced by AD Module (NÂ =Â 189). (DOCX 1056Â kb)

Sample page from online education module. (DOCX 119Â kb)

Reasons for Not Completing an AD during the RCT (NÂ =Â 189). (DOCX 382Â kb)

Supplementary_Information_Frith for Pragmatic randomised controlled trial of a personalised intervention for carers of people requiring home oxygen therapy by Peter Frith, Ruth Sladek, Richard Woodman, Tanja Effing, Sandra Bradley, Suzanne van Asten, Tina Jones, Khin Hnin, Mary Luszcz, Paul Cafarella, Simon Eckermann, Debra Rowett and Paddy A Phillips in Chronic Respiratory Disease

Supplementary_Information_Frith for Pragmatic randomised controlled trial of a personalised intervention for carers of people requiring home oxygen therapy by Peter Frith, Ruth Sladek, Richard Woodman, Tanja Effing, Sandra Bradley, Suzanne van Asten, Tina Jones, Khin Hnin, Mary Luszcz, Paul Cafarella, Simon Eckermann, Debra Rowett and Paddy A Phillips in Chronic Respiratory Disease

Link to Open Access version only under publisher copyright policy., Objective: To determine the prevalence of completion of advance directives (ADs) and wills by South Australians aged 15 years and over. Design, setting and participants: Statewide population-based survey of a single member (aged 15 years and over) of 3055 South Australian households between 4 September and 12 December 2012. Main outcome measures: Prevalence and sociodemographic determinants of completion of the four recognised legal ADs in South Australia (enduring power of attorney [EPA] for finance, enduring power of guardianship [EPG] for health care/lifestyle, medical power of attorney [MPA] for medical treatment and anticipatory direction for end-of-life care) and wills. Results: Nearly half the 3055 survey participants had not completed any AD document or will. Financial documents were more likely to be completed than health care documents. In multivariate analysis, the odds of not having completed any AD was higher among those aged 15–24 years compared with those aged over 65 years (odds ratio [OR], 55.3; 95% CI, 31.3–97.7) and 25–44 years (OR, 24.9; 95% CI, 17.3–36.1). Similarly, the odds were higher for those born in another country (OR, 2.0; 95% CI, 1.6–2.4); those never married (OR, 3.1; 95% CI, 2.3–4.2) or in de facto relationships (OR, 2.8; 95% CI, 2.1–3.8) or separated/divorced (OR, 1.8; 85% CI, 1.3–2.4) compared with those married; those who left school in Year 12 or before (OR, 1.5; 95% CI, 1.1–1.9) or with a bachelor degree (OR, 1.5; 95% CI, 1.1–2.0) compared with those who had completed a trade/apprenticeship, certificate/diploma; and those in blue collar occupations (OR 1.6; 95% CI, 1.3–2.2) or not employed (OR, 2.2; 95% CI, 1.4–3.6) versus professionals. The odds of not having completed any AD were lower for those living in rural or regional areas (OR, 0.8, 95% CI, 0.6–1.0) compared with the metropolitan area, and for those in the highest income bracket earning more than $80 000 (OR, 0.6; 95% CI, 0.5–0.8) compared with those in the middle bracket earning $40 000–$80 000. Conclusion: Completion rates of ADs among South Australians remain low, with financial instruments more likely to be completed than health care and lifestyle instruments. The odds of not completing ADs were associated with age and socioeconomic characteristics. General practitioners are in a good position to target advance care planning towards relevant patient groups, which would likely improve rates of decision making in future health care.