tetano
Editor, Senior Moderator
Am J Public Health
. 2023 May 18;e1-e10.
doi: 10.2105/AJPH.2023.307303. Online ahead of print. Stratified Simple Random Sampling Versus Volunteer Community-Wide Sampling for Estimates of COVID-19 Prevalence
Rachel J Keith[SUP] 1 [/SUP], Rochelle H Holm[SUP] 1 [/SUP], Alok R Amraotkar[SUP] 1 [/SUP], Megan M Bezold[SUP] 1 [/SUP], J Michael Brick[SUP] 1 [/SUP], Adrienne M Bushau-Sprinkle[SUP] 1 [/SUP], Krystal T Hamorsky[SUP] 1 [/SUP], Kathleen T Kitterman[SUP] 1 [/SUP], Kenneth E Palmer[SUP] 1 [/SUP], Ted Smith[SUP] 1 [/SUP], Ray Yeager[SUP] 1 [/SUP], Aruni Bhatnagar[SUP] 1 [/SUP]
Affiliations
Objectives. To evaluate community-wide prevalence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection using stratified simple random sampling. Methods. We obtained data for the prevalence of SARS-CoV-2 in Jefferson County, Kentucky, from adult random (n = 7296) and volunteer (n = 7919) sampling over 8 waves from June 2020 through August 2021. We compared results with administratively reported rates of COVID-19. Results. Randomized and volunteer samples produced equivalent prevalence estimates (P < .001), which exceeded the administratively reported rates of prevalence. Differences between them decreased as time passed, likely because of seroprevalence temporal detection limitations. Conclusions. Structured targeted sampling for seropositivity against SARS-CoV-2, randomized or voluntary, provided better estimates of prevalence than administrative estimates based on incident disease. A low response rate to stratified simple random sampling may produce quantified disease prevalence estimates similar to a volunteer sample. Public Health Implications. Randomized targeted and invited sampling approaches provided better estimates of disease prevalence than administratively reported data. Cost and time permitting, targeted sampling is a superior modality for estimating community-wide prevalence of infectious disease, especially among Black individuals and those living in disadvantaged neighborhoods. (Am J Public Health. Published online ahead of print May 18, 2023:e1-e10. https://doi.org/10.2105/AJPH.2023.307303).
. 2023 May 18;e1-e10.
doi: 10.2105/AJPH.2023.307303. Online ahead of print. Stratified Simple Random Sampling Versus Volunteer Community-Wide Sampling for Estimates of COVID-19 Prevalence
Rachel J Keith[SUP] 1 [/SUP], Rochelle H Holm[SUP] 1 [/SUP], Alok R Amraotkar[SUP] 1 [/SUP], Megan M Bezold[SUP] 1 [/SUP], J Michael Brick[SUP] 1 [/SUP], Adrienne M Bushau-Sprinkle[SUP] 1 [/SUP], Krystal T Hamorsky[SUP] 1 [/SUP], Kathleen T Kitterman[SUP] 1 [/SUP], Kenneth E Palmer[SUP] 1 [/SUP], Ted Smith[SUP] 1 [/SUP], Ray Yeager[SUP] 1 [/SUP], Aruni Bhatnagar[SUP] 1 [/SUP]
Affiliations
- PMID: 37200600
- DOI: 10.2105/AJPH.2023.307303
Objectives. To evaluate community-wide prevalence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection using stratified simple random sampling. Methods. We obtained data for the prevalence of SARS-CoV-2 in Jefferson County, Kentucky, from adult random (n = 7296) and volunteer (n = 7919) sampling over 8 waves from June 2020 through August 2021. We compared results with administratively reported rates of COVID-19. Results. Randomized and volunteer samples produced equivalent prevalence estimates (P < .001), which exceeded the administratively reported rates of prevalence. Differences between them decreased as time passed, likely because of seroprevalence temporal detection limitations. Conclusions. Structured targeted sampling for seropositivity against SARS-CoV-2, randomized or voluntary, provided better estimates of prevalence than administrative estimates based on incident disease. A low response rate to stratified simple random sampling may produce quantified disease prevalence estimates similar to a volunteer sample. Public Health Implications. Randomized targeted and invited sampling approaches provided better estimates of disease prevalence than administratively reported data. Cost and time permitting, targeted sampling is a superior modality for estimating community-wide prevalence of infectious disease, especially among Black individuals and those living in disadvantaged neighborhoods. (Am J Public Health. Published online ahead of print May 18, 2023:e1-e10. https://doi.org/10.2105/AJPH.2023.307303).