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Table 3 Unadjusted numbers, proportions and relative risks adjusted for current age for variables associated with having missing data for father's highest education level, by survey mode

From: Non-response to a life course socioeconomic position indicator in surveillance: comparison of telephone and face-to-face modes

  Telephone (n = 2999) Face-to-face (n = 2893) Face-to-face EWP (n = 2206)
  Unadjusted Adjusted Unadjusted Adjusted Unadjusted Adjusted
  n % (RR, 95% CI) n % (RR, 95% CI) n % (RR, 95% CI)
Sex          
   Male 268 18.3 (1.00) 190 13.4 (1.00) 154 14.4 (1.00)
   Female 319 20.9 (1.11, 0.96–1.28) 206 14.0 (1.00, 0.82–1.21) 157 13.8 (0.93, 0.74–1.16)
Country of birth          
   Australia 421 18.0 (1.00) 273 12.6 (1.00) 215 12.9 (1.00)
   UK/Ireland 103 30.7 (1.33, 1.11–1.58)* 70 21.0 (1.36, 1.06–1.74) 57 22.2 (1.40, 1.07–1.83)
   Other 64 19.6 (0.91, 0.72–1.16) 54 13.6 (0.92, 0.68–1.24) 39 14.1 (0.91, 0.64–1.31)
Marital status          
   Married/de facto 399 19.6 (1.00) 239 12.5 (1.00) 201 13.1 (1.00)
   Separated/divorced/widowed 126 31.3 (1.25, 1.07–1.46)* 97 21.9 (1.37, 1.12–1.67)* 68 21.1 (1.24, 0.99–1.56)
   Never married 62 11.0 (0.85, 0.62–1.18) 60 11.3 (1.43, 0.99–2.07) 43 12.1 (1.59, 1.03–2.46)
Area of residence          
   Metropolitan 422 19.0 (1.00) 282 13.4 (1.00) 215 13.6 (1.00)
   Country 166 21.3 (1.06, 0.91–1.24) 115 14.6 (1.05, 0.84–1.33) 96 15.5 (1.11, 0.86–1.44)
Highest education level          
   Bachelor degree or higher 33 6.1 (1.00) 9 2.0 (1.00) 6 1.8 (1.00)
   Certificate/Diploma 92 16.7 (2.48, 1.69–3.62)** 68 9.9 (4.73, 2.40–9.34)** 51 9.5 (4.97, 2.24–11.03)**
   Trade/Apprenticeship 67 18.5 (2.66, 1.78–3.96)** 51 12.1 (5.51, 2.72–11.14)** 45 14.1 (6.69, 2.93–15.26)**
   Left school after age 15 215 21.1 (3.31, 2.33–4.70)** 153 16.6 (7.97, 4.12–15.43)** 116 16.8 (8.64, 3.95–18.87)**
   Left school at age 15 or younger 177 36.6 (4.05, 2.81–5.84)** 114 32.4 (11.84, 6.01–23.30)** 93 32.6 (12.67, 5.68–28.28)**
   Still at school 3 6.9 (-) 0 0.0 (-) 0 0.0 (-)
Gross annual household income          
   More than $60,000 126 11.2 (1.00) 50 5.0 (1.00) 39 5.0 (1.00)
   $40,001 to $60,000 86 15.7 (1.33, 1.01–1.74) 52 10.1 (2.01, 1.27–3.17)* 44 11.4 (2.23, 1.32–3.77)*
   $20,001 to $40,000 123 22.3 (1.58, 1.23–2.04)** 83 16.0 (2.87, 1.90–4.35)** 63 16.5 (2.84, 1.72–4.68)**
   Up to $20,000 154 33.9 (2.10, 1.63–2.70)** 134 26.0 (4.16, 2.77–6.26)** 100 26.4 (3.97, 2.43–6.50)**
   Not stated 99 30.7 (2.43, 1.86–3.16)** 77 23.0 (4.20, 2.76–6.40)** 65 23.9 (4.27, 2.61–6.99)**
Employment status          
   Full time employed 158 12.6 (1.00) 89 7.7 (1.00) 63 7.3 (1.00)
   Part time/casual employed 96 17.1 (1.35, 1.05–1.74) 38 7.4 (0.95, 0.64–1.42) 29 7.6 (1.01, 0.62–1.63)
   Unemployed/unable to work 45 27.1 (2.11, 1.57–2.83)** 21 21.3 (3.08, 1.81–5.26)** 11 23.0 (3.38, 1.70–6.71)*
   Home duties 69 25.2 (1.73, 1.31–2.28)** 69 20.8 (2.45, 1.72–3.49)** 52 20.5 (2.42, 1.60–3.73)**
   Retired 208 35.7 (1.95, 1.50–2.53)** 147 24.8 (2.40, 1.56–3.69)** 131 24.8 (2.38, 1.41–4.00)*
   Student 11 8.1 (0.83, 0.36–1.93) 15 9.9 (1.61, 0.71–3.65) 15 14.4 (2.49, 1.11–5.58)
   Not stated 2 5.8 (-) 18 31.8 (3.58, 2.29–5.62)** 10 35.2 (4.01, 2.21–7.26)**
Occupation          
   Manager/Administrator/Professional 79 11.7 (1.00) 34 6.0 (1.00) 28 6.2 (1.00)
   Associate professional 42 16.1 (1.42, 1.01–1.99) 20 9.6 (1.59, 0.95–2.66) 18 11.4 (1.68, 0.98–2.91)
   Tradesperson/Advanced clerical or service 109 22.6 (1.86, 1.43–2.41)** 86 14.0 (2.21, 1.49–3.27)** 70 14.7 (2.12, 1.38–3.27)*
   Intermediate clerical/service/sales/production/transport 144 20.0 (1.81, 1.41–2.33)** 100 14.4 (2.42, 1.66–3.54)** 76 14.4 (2.27, 1.50–3.44)**
   Elementary clerical, sales, service/labourer 157 25.8 (2.40, 1.87–3.08)** 106 18.7 (3.18, 2.17–4.65)** 76 18.9 (2.88, 1.88–4.42)**
   Not stated/Home duties/Student/Never worked 57 22.5 (1.86, 1.38–2.52)** 51 20.6 (3.15, 2.06–4.81)** 143 22.5 (3.09, 1.95–4.91)**
  1. * p < 0.01 ** p < 0.001