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Table 4 Comparison of age-standardised notification rates (per 100,000 population) and rate ratios of STI and BBV notifications received in 2004 by Aboriginality prior to and following data linkage by estimation method

From: Improving the accuracy of Aboriginal and non-Aboriginal disease notification rates using data linkage

  Pre-linkage Sensitive Specific
Disease ATSI non-ATSI RR (95% CI) ATSI non-ATSI RR (95% CI) ATSI non-ATSI RR (95% CI)
Chlamydia 1501 105 14.4 (11.2–18.6) 1608 165 9.9 (7.6–12.9) 1561 163 9.7 (7.4–12.7)
Gonorrhoea 1524 18.0 89.4 (51.0–157) 1534 19.6 82.1 (49.7–136) 1526 19.2 83.5 (49.4–141)
Syphilis 313 2.6 105 (65.3–168) 315 3.8 70.5 (44.4–112) 313 3.8 71.2 (45.1–112)
Hepatitis B 117 18.5 5.9 (4.3–8.0) 122 20.1 5.7 (4.4–7.5) 122 20.1 5.7 (4.4–7.5)
Hepatitis C 232 41.1 6.1 (4.7–8.0) 271 58.2 5.0 (4.0–6.3) 240 57.4 4.6 (3.5–6.0)
  1. Sexually Transmitted Infections (STI) excluding Donovanosis
  2. Blood borne virus (BBV) notifications, excluding HIV (Human Immunodeficiency virus)
  3. ATSI: Aboriginal and Torres Strait Islander
  4. RR: rate ratio estimate based on Poisson regression coefficients
  5. CI: confidence interval