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Table 3 Univariate logistic regressions of factors associated with underreporting

From: Characterising the extent of misreporting of high blood pressure, high cholesterol, and diabetes using the Australian Health Survey

  High blood pressure High cholesterol Diabetes
OR 95 % CI OR 95 % CI OR 95 % CI
Sex
 Male 1.0 (ref)   1.0 (ref)   1.0 (ref)  
 Female 0.9 (0.7–1.2) 1.1 (0.8–1.6) 0.5 (0.2–1.0)*
Age (per year increase in age from age 18) 0.96 (0.95–0.97)** 0.98 (0.97–0.99)** 0.99 (0.96–1.02)
Age group
 18–44 years 1.0 (ref)   1.0 (ref)   1.0 (ref)  
 45–64 years 0.4 (0.2–0.6)** 0.5 (0.3–0.7)** 1.2 (0.4–4.0)
 65+ 0.2 (0.1–0.3)** 0.5 (0.3–0.8)** 0.8 (0.2–2.5)
ASGS remoteness classification
 Major cities 1.0 (ref)   1.0 (ref)   1.0 (ref)  
 Inner regional areas 0.9 (0.6–1.3) 1.0 (0.6–1.4) 1.0 (0.4–2.5)
 Other areas 1.0 (0.6–1.5) 1.1 (0.6–1.8) 0.7 (0.3–1.7)
Equivalised household income
 Quintile 1 (lowest income) 1.0 (ref)   1.0 (ref)   1.0 (ref)  
 Quintile 2 1.0 (0.7–1.5) 0.9 (0.5–1.6) 1.0 (0.4–2.6)
 Quintile 3 1.6 (1.0–2.6) 0.8 (0.5–1.4) 4.1 (1.5–10.8)**
 Quintile 4 1.9 (1.2–3.1)** 1.2 (0.7–2.0) 2.9 (1.0–8.5)
 Quintile 5 (highest income) 2.4 (1.5–3.8)** 1.0 (0.6–1.7) 3.4 (1.1–10.7)*
IRSD (area-level disadvantage)
 Quintile 1 (highest disadvantage) 1.0 (ref)   1.0 (ref)   1.0 (ref)  
 Quintile 2 0.9 (0.6–1.5) 1.0 (0.6–1.8) 2.5 (0.8–7.8)
 Quintile 3 1.0 (0.6–1.5) 1.3 (0.7–2.3) 1.0 (0.3–3.3)
 Quintile 4 0.9 (0.6–1.5) 0.9 (0.5–1.6) 2.8 (0.9–8.3)
 Quintile 5 (lowest disadvantage) 1.4 (0.8–2.2) 0.9 (0.5–1.7) 4.1 (1.4–12.3)*
Education level
 Year 9 or below 1.0 (ref)   1.0 (ref)   1.0 (ref)  
 Year 10 or equivalent 1.2 (0.8–1.8) 1.3 (0.8–2.1) 1.4 (0.5–3.8)
 Year 11 or equivalent 2.3 (1.4–4.0)** 1.5 (0.8–2.7) 1.8 (0.5–6.0)
 Year 12 or equivalent 1.7 (1.2–2.5)** 1.8 (1.2–2.9)** 1.0 (0.4–2.7)
English Proficiency
 Fluent 1.0 (ref)   1.0 (ref)   1.0 (ref)  
 Not fluent 1.2 (0.6–2.5) 0.7 (0.3–1.3) 2.7 (0.7–10.1)
Country of birth
 Australia 1.0 (ref)   1.0 (ref)   1.0 (ref)  
 Not Australia 1.2 (0.9–1.6) 1.0 (0.7–1.4) 1.1 (0.5–2.3)
  1. Notes: CI 95 % confidence interval, IRSD Index of Relative Socio-economic Disadvantage, OR odds ratio, ref reference group
  2. *Group significantly different from reference group (p < 0.05)
  3. **Group significantly different from reference group (p < 0.01)