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. 2016 Sep 20;11(9):e0161994. doi: 10.1371/journal.pone.0161994

Table 3. Prevalence of carer status by demographic variables, by three time periods: Health Omnibus Survey,- 1994, 2004, 2014.

  1994     2004     2014   % diff 1994 &2014 % diff 2004 &2014
    n % (95% CI) p value n % (95% CI) p value n % (95% CI) p value    
Sex Male 43 2.9 (2.1–4.0) 0.13 70 4.8 (3.6–6.2) 0.029 73 5.4 (4.0–7.3) 0.021 86.2 12.5
Female 61 4.0 (3.0–5.4)   107 7.0 (5.8–8.4)   110 8.0 (6.6–9.5)   100.0 14.3
Age groups 18 to 49 43 2.2 (1.5–3.1) <0.001 77 4.2 (3.3–5.4) <0.001 64 4.2 (3.1–5.7) <0.001 90.9 0.0
50 to 69 44 6.4 (4.8–8.5)   62 7.8 (6.1–9.8)   80 9.3 (7.3–11.8)   45.3 19.2
70+ 17 5.0 (3.0–8.4)   39 9.5 (7.0–12.9)   39 11.0 (8.0–14.8)   120.0 15.8
Area Metropolitan 68 3.3 (2.6–4.1) 0.521 117 5.5 (4.6–6.6) 0.196 131 6.4 (5.2–7.9) 0.426 93.9 16.4
Country 36 3.9 (2.4–6.1)   61 6.7 (5.3–8.6)   52 7.5 (5.3–10.6)   92.3 11.9
Country of birth Australia 68 3.0 (2.3–3.9) 0.005 132 5.9 (4.9–7.1) 0.29 113 5.8 (4.6–7.3) 0.046 93.3 -1.7
UK/Ireland 23 6.5 (4.3–9.8)   28 7.5 (4.8–11.6)   24 9.3 (6.4–13.4)   43.1 24.0
Other 13 3.3 (1.8–5.7)   18 4.4 (2.7–7.0)   47 8.7 (5.9–12.6)   163.6 97.7
Marital status # Married/defacto Married/defacto 79 4.3 (3.4–5.4) 0.003 133 7.1 (6.0–8.5) 0.003 137 8.0 (6.5–9.8) <0.001 86.0 12.7
Separated/Divorced 11 4.3 (2.3–7.9)   16 6.3 (4.0–9.9)   20 8.9 (6.2–12.7)   107.0 41.3
Never married 10 1.4 (0.7–2.9)   25 3.5 (2.1–5.8)   19 3.0 (2.0–4.4)   114.3 -14.3
Educational Attainment Secondary schooling 64 3.7 (2.8–4.8) 0.628 101 6.6 (5.4–8.0) 0.16 83 7.7 (6.2–9.6) 0.092 108.1 16.7
Trade qualifications, Certificate, Diploma 33 3.3 (2.2–4.9)   61 5.8 (4.4–7.6)   68 7.0 (5.3–9.0)   112.1 20.7
Bachelor Degree 7 2.5 (1.1–5.5)   15 3.6 (2.1–6.1)   32 4.7 (3.1–7.0)   88.0 30.6
Work status # Employed full or part time Employed full or part time 33 2.1 (1.4–3.3) <0.001 64 3.8 (2.9–5.1) <0.001 71 4.6 (3.5–6.2) <0.001 119.0 21.1
Home duties 37 6.8 (4.8–9.4)   39 11.7 (8.2–16.4)   18 12.0 (6.8–20.1)   76.5 2.6
Retired 27 5.5 (3.8–7.9)   51 9.1 (6.9–11.7)   65 11.6 (9.3–14.4)   110.9 27.5
Household annual income # $40,000 or more $40,000 or more 16 1.8 (1.0–3.3) 0.004 63 4.2 (3.2–5.5) <0.001 68 4.9 (3.5–6.8) <0.001 172.2 16.7
$20-$40,000 22 3.0 (1.9–4.8)   42 7.4 (5.4–10.1)   47 15.1 (11.5–19.6)   403.3 104.1
Less than $20,000 47 5.4 (4.0–7.1)   58 9.4 (7.4–11.8)   15 9.5 (5.8–15.2)   75.9 1.1
Index Relative Socio-disadvantage (SEIFA)          
Middle to highest 54 3.1 (2.3–4.1) 0.492 103 5.9 (4.8–7.1) 0.928 99 6.1 (4.9–7.5) 0.161 96.8 3.4
Lowest low 49 3.9 (2.8–5.5)   75 5.9 (4.8–7.4)   84 7.6 (5.8–10.0)   94.9 28.8
Total 104 3.4 (2.8–4.3)   177 5.9 (5.1–6.8)   183 6.7 (5.6–8.0)   97.1 13.6

# Widowed (Marital Status: excluded

Not stated (Work Status): excluded

Not stated (Household annual income): excluded