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Table 2 Comparison of HIV and HCV prevalence (2004/2005) and the trends in newly diagnosed HIV infections (2004 to 2011) in surveillance data*, in Poland by region

From: High regional variability of HIV, HCV and injecting risks among people who inject drugs in Poland: comparing a cross-sectional bio-behavioural study with case-based surveillance

Source of information Indicator Region
   Lubelskie Lubuskie Śląskie Warmińsko-mazurskie Mazowieckie Dolnośląskie
  Region total population (2012, Central Statistics Office) 2165651 1023317 4615870 1450697 5301760 2914362
Bio-behavioural study HIV prevalence (%) 28.7 9.0 13.3 2.4 16.0 31.5
HCV prevalence (%) 43.7 55.1 68.3 59.8 60.0 64.0
In at least one site in the region the HCV prevalence was >50% and HIV prevalence was <5% No Yes No Yes No No
In at least one site in the region there was no needle/syringe programme in the city Yes Yes Yes No No No
Proportion of short-term injectors (≤5 years, %) 26.7 57.1 38.3 55.4 62.7 33.5
Proportion current (past 30 days) opioid users (%) 48.3 69.2 75.0 54.9 90 83.7
Proportion sharing needles/syringes (past 12 months, %) 19.4 26.9 28.3 29.3 25.8 27.8
Case-based surveillance Estimated number of new HIV diagnoses in 2004 (95% CI)* 6 (1–10) 9 (2–17) 43 (35–52) 20 (17–24) 39 (17–61) 90 (77–103)
  Peak year in 2000 to 2012; number during the peak year* 2000; 15 2009; 18 2001; 55 2000; 41 2007; 58 2003; 107
  Diagnosis rate ratios**:       
  2004 to 2005 (cross-sectional study period) ref. ref. ref. ref. ref. ref.
  2008 to 2009 0.7 (0.3-1.8) 1.6 (0.9-2.9) 0.4 (0.3-0.6) 0.7 (0.4-1.1) 1 (0.8-1.4) 0,7 (0,5-0,9)
  2010 to 2011 0.5 (0.2-1.5) 0.7 (0.4-1.5) 0.6 (0.4-0.8) 0.5 (0.3-0.8) 0.5 (0.4-0.8) 0,5 (0,4-0,6)
  1. *numbers represent estimated number of newly diagnosed cased based on multiple imputations.
  2. **rate ratios from univariable Poisson regression applied to imputed data, relating the count (outcome variable) to time period (explanatory variable).
  3. Abbreviations: CI, confidence interval; HCV, hepatitis C virus; HIV, human immunodeficiency virus.