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. 2021 Jun 29;16(6):e0253930. doi: 10.1371/journal.pone.0253930

Table 2. Descriptive characteristics of analysis sample at baseline (April) (N = 1843).

Characteristic Analysis sample (N = 1843) n (%) National Australian estimates
Age, median (IQR) 42 (28–57)
Age group
18 to 25 years 353 (19.2%) 13.7%
26 to 40 years 528 (28.6%) 27.2%
41 to 55 years 462 (25.1%) 26.0%
56 to 90 years 500 (27.1%) 33.1%
Gender
Male 487 (26.4%) 48.9%
Female 1322 (71.7%) 51.1%
Other/prefer not to say 34 (1.8%) -
Educational attainment*
Less than university 496 (26.9%) 53.7%
University 1347(73.1%) 32.4%
State/territory of residence
Australian Capital Territory 58 (3.1%) 1.7%
Northern Territory 7 (0.4%) 0.9%
Victoria 291 (15.8%) 25.5%
New South Wales 937 (50.8%) 32.0%
Queensland 258 (14.0%) 19.9%
Western Australia 130 (7.1%) 10.5%
South Australia 84 (4.6%) 7.3%
Tasmania 78 (4.2%) 2.2%
Residential area remoteness^
Major cities 1374 (74.6%) 73.3%
Regional and remote 467 (25.4%) 26.5%
Socioeconomic status, mean IRSAD quintile (SD) 3.66 (1.40)
Born in Australia 1405 (76.2%) 61.3%
English primary language 1774 (96.3%) 71.5%
Aboriginal or Torres Strait Islander
Yes 31 (1.7%) 2.1%
No 1796 (97.4%) 91.6%
Did not respond 16 (0.9%) 6.2%
Chronic health conditions**
None 912 (49.5%) 52.7%
One 537 (29.1%) 27.0%
Two or more 394 (21.4%) 20.2%
Health literacy adequacy^^ 1695 (92.0%) -
Self-Reported General Health††
Poor 68 (3.7%) 3.9%
Fair 248 (13.5%) 11.3%
Good 629 (34.1%) 29.1%
Very good 667 (36.2%) 35.4%
Excellent 231 (12.5%) 20.2%

National Australian estimates are based on 2016 Australian census data, for people aged 19–90 years, except where indicated.

*13.8% of census data listed supplementary codes or ‘not stated’ for highest level of educational attainment.

^Remoteness indicators are based on 2016 ABS data, and as such, individuals who reside in newer postcodes established after 2016 (n = 2) are missing data on this variable.

Quintile 1 indicates a participant resides in one of the least advantaged (most disadvantaged) areas; quintile 5 indicates a participant resides in on the most advantaged (least disadvantaged) areas.

**National estimates based on 2017–18 National Health Survey, people aged ≥15 years.

Chronic conditions included arthritis, asthma, back problems, cancer, chronic obstructive pulmonary disease (COPD), diabetes mellitus, heart, stroke and vascular disease, kidney disease, mental and behavioural conditions and osteoporosis.

^^Based on Single Item Literacy Screener (SILS): How confident are you with filling out medical forms by yourself: not at all, a little bit, somewhat, quite a bit, extremely. “Not at all” response categorised as inadequate health literacy.

††National estimates based on 2017–18 National Health Survey, people aged ≥18 years.