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. 2018 Mar 20;18:371. doi: 10.1186/s12889-018-5301-4

Table 1.

Participant characteristics and their comparison with the Australian public

Characteristics Participants Australian public
N % N %
Total 943 100 16,517,613 100
Age (Mean ± S.D., range) 47.6 ± 16.6, 18–84
Age range (years)a
 18–29 181 19.2 3,533,626 21.4
 30–49 347 36.8 6,020,939 36.4
 50 + 415 44.0 6,963,048 42.2
Gendera
 Female 483 51.2 8,446,803 51.1
 Male 460 48.8 8,070,810 48.8
Country of birth
 Australia 727 77.1 10,674,865 64.6
 Not Australia 216 22.9 5,842,748 35.4
Education`
 Higher degree or postgraduate diploma/Bachelor degree 299 31.7 3,268,574 19.8
 Diploma/Vocational 345 36.6 1,392,191 8.4
 Completed highest level of school 178 18.9 2,639,997 16.0
 Did not complete highest level of school 121 12.8 472,469 2.9
Occupation
 Professional/Managerial 189 20.0
 Sales/Clerical 147 15.6
 Technical/Skilled 81 8.6
 Unskilled/Labourer 53 5.6
 Other occupations 53 5.6
 Do not work 420 44.5
Work outside home
 Yes, full-time 331 35.1
 Yes, part-time 192 20.4
 No (Not employed, student, work at home, homemaker, retired, etc.) 420 44.5
Gross annual income
 Under $50,000 348 36.9
 $50,000 to just under $100,000 281 29.8
 $100,000 and over 208 22.1
 Refused 103 11.2
Marital status
 Married/Common law, De-facto or Living with a partner 568 60.2
 Single/Never married 227 24.1
 Divorced/Separated/Widowed 148 15.7
Number of people in the household
 One 186 19.7
 Two 349 37.0
 Three 163 17.3
 Four 172 18.2
 Five or more 73 7.7
Children under 18 years of age
 Yes 285 30.2
 No 658 69.8
Area description
 Within a capital city 535 56.7
 Within a major regional city 234 24.8
 Within a rural town or its surrounds 144 15.3
 More than 5 km from the nearest town 30 3.2
Statea
 New South Wales 296 31.4 5,316,815 32.2
 Victoria 257 27.3 4,149,390 25.1
 Queensland 181 19.2 3,278,855 19.8
 Western Australia 85 9.0 1,709,692 10.4
 South Australia 84 8.9 1,247,852 7.6
 Tasmania 24 2.5 381,299 2.3
 Australian Capital Territory 13 1.4 277,559 1.7
 Northern Territory 3 0.3 153,716 0.9
 Other territories 0 0 2433 0.0
Aboriginal or Torres Strait Islander descent
 Yes 15 1.6 10,329 0.1
 No 928 98.4 16,507,284 99.9
Family member working as a registered healthcare professional e.g. doctor, nurse, dietician or pharmacist
 Yes 55 5.8
 No 888 94.2
Family history of kidney failure
 Yes 47 5.0
 No 896 95.0
Medical condition(s)/illness(es) that require regular medications
High blood pressure known as hypertension
 Yes 220 23.3
 No 704 74.7
 I don’t know 19 2.0
Raised blood sugar known as diabetes
 Yes 81 8.6
 No 840 89.1
 I don’t know 22 2.3
Heart problems such as heart failure or heart attack
 Yes 42 4.5
 No 877 93.0
 I don’t know 24 2.5
Personal history of stroke
 Yes 18 1.9
 No 900 95.4
 I don’t know 25 2.7

Blanks indicate that the data for the Australian public was not available

aSample was post-weighted to match only three Australian public characteristics (age, gender and state)

`Variables do not add up to total due to education information inadequately described or not stated by the Australian public