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Table 8 Comparison between raw prevalence rates of COVID-19 cases among Lombardy general population and Lombardy population with HHT

From: Characterization of epidemiological distribution and outcome of COVID-19 in patients with hereditary hemorrhagic telangiectasia: a nationwide retrospective multi-centre study during first wave in Italy

Lombardy region
General population
Susceptible Populationa     COVID-19 positive in general population
Only cases with swab molecular confirmationb
Observed Raw prevalence rate in general population
Only cases with swab molecular confirmationb
10,027,602     93,901 1:107
HHT
  Observed COVID-19 positive cases in HHT Observed Raw prevalence rate in HHT Observed Raw prevalence rate in HHT Observed COVID-19 positive cases in HHT Observed Raw prevalence rate in HHT
  Serol. confirmation, irrespective of swab molecular confirmationb Serol. confirmation, irrespective of swab molecular confirmationb
(Susceptible population: Respondents only = 63)
Serol. confirmation, irrespective of swab molecular confirmationb
(Susceptible population: Non-Respondents included = 131)
Only cases with swab molecular confirmationb Only cases with swab molecular confirmationb
(Susceptible population: Non-Respondents included = 131)
  8 8/63 (12.7%)
1:7.87
8/131 (6.1%)
1:16.37
3 3/131 (2.29%)
1:43.67
  1. Susceptible population is indicated in bold
  2. (aISTAT, 2019, Dec 31st) (Lombardy population, 2020)
  3. bCases reported at the end of study period: (2020, June 30th)