Impact of the COVID-19 pandemic and the dynamic COVID-zero strategy on HIV incidence and mortality in China

BMC Public Health

Table 1 Comparisons of the average yearly HIV incidence, mortality rates, and case fatality rates between 2020 and 2022 and 2015–2019

Variable	Post-COVID-19 Stage (2020–2022)	Pre-COVID-19 Stage (2015–2019)	Changes (%)	95% CI	p-value
Average Yearly Incidence Rate (/100,000)	4.1827	4.4143	−5.2450	−5.2766, − 5.2154	< 0.001
Average Yearly Mortality Rate (/100,000)	1.3773	1.2070	14.1076	14.0430, 14.1877	< 0.001
Average Yearly Case Fatality Rate (/100)	32.9285	27.3439	20.4238	20.3842, 20.4629	< 0.001

Changes = (x₂ – x₁) / x₁ × 100, x1: average yearly incidence/mortality/CFR in 2015–2019; x2: average yearly incidence/mortality/CFR in 2020–2022. p-values were computed using two proportional tests
Pre-COVID-19 Stage:
(1) Average yearly incidence = (total number of new cases from 2015 to 2019 / 5) / (sum of the population from 2015 to 2019 / 5) * 100,000
(2) Average yearly mortality = (total number of new deaths from 2015 to 2019 / 5) / (sum of the population from 2015 to 2019 / 5) * 100,000
(3) Average yearly CFR = (total number of deaths from 2015 to 2019 / 5) / (total number of cases from 2015 to 2019 / 5) * 100
Post-COVID-19 Stage:
(1) Average yearly incidence = (total number of new cases from 2020 to 2022 / 3) / (sum of the population from 2020 to 2022 / 3) * 100,000
(2) Average yearly mortality = (total number of new deaths from 2020 to 2022 / 3) / (sum of the population from 2020 to 2022 / 3) * 100,000
(3) Average yearly CFR = (total number of deaths from 2020 to 2022 / 3) / (total number of cases from 2020 to 2022 / 3) * 100

ISSN: 1471-2458