Search

Your search keyword '"Lundeen, Sarah"' showing total 44 results
Start Over Author "Lundeen, Sarah"
44 results on '"Lundeen, Sarah"'

1. On-orbit calibration and performance of the EMIT imaging spectrometer

Author

Thompson, David R., Green, Robert O., Bradley, Christine, Brodrick, Philip G., Mahowald, Natalie, Dor, Eyal Ben, Bennett, Matthew, Bernas, Michael, Carmon, Nimrod, Chadwick, K. Dana, Clark, Roger N., Coleman, Red Willow, Cox, Evan, Diaz, Ernesto, Eastwood, Michael L., Eckert, Regina, Ehlmann, Bethany L., Ginoux, Paul, Ageitos, María Gonçalves, Grant, Kathleen, Guanter, Luis, Pearlshtien, Daniela Heller, Helmlinger, Mark, Herzog, Harrison, Hoefen, Todd, Huang, Yue, Keebler, Abigail, Kalashnikova, Olga, Keymeulen, Didier, Kokaly, Raymond, Klose, Martina, Li, Longlei, Lundeen, Sarah R., Meyer, John, Middleton, Elizabeth, Miller, Ron L., Mouroulis, Pantazis, Oaida, Bogdan, Obiso, Vincenzo, Ochoa, Francisco, Olson-Duvall, Winston, Okin, Gregory S., Painter, Thomas H., Pérez García-Pando, Carlos, Pollock, Randy, Realmuto, Vincent, Shaw, Lucas, Sullivan, Peter, Swayze, Gregg, Thingvold, Erik, Thorpe, Andrew K., Vannan, Suresh, Villarreal, Catalina, Ung, Charlene, Wilson, Daniel W., and Zandbergen, Sander

Published
2024
Full Text
View/download PDF

2. Engagement and factors associated with annual anal human papillomavirus screening among sexual and gender minority individuals

Author

Nitkowski, Jenna, primary, Ridolfi, Timothy J, additional, Lundeen, Sarah J, additional, Giuliano, Anna R, additional, Chiao, Elizabeth Y, additional, Fernandez, Maria E, additional, Schick, Vanessa, additional, Smith, Jennifer S, additional, Bruggink, Paige, additional, Brzezinski, Bridgett, additional, and Nyitray, Alan G, additional

Published
2024
Full Text
View/download PDF

4. The influence of home versus clinic anal human papillomavirus sampling on high-resolution anoscopy uptake in the Prevent Anal Cancer Self-Swab Study.

Author

Nitkowski, Jenna, Ridolfi, Timothy J., Lundeen, Sarah J., Giuliano, Anna R., Chiao, Elizabeth Y., Fernandez, Maria E., Schick, Vanessa, Smith, Jennifer S., Brzezinski, Bridgett, and Nyitray, Alan G.

Abstract

Background: Anal cancer disproportionately affects sexual and gender minority individuals living with HIV. High-resolution anoscopy (HRA) is an in-clinic procedure to detect precancerous anal lesions and cancer, yet prospective data on factors associated with HRA attendance are lacking. We examined whether anal HPV sampling at home versus in a clinic impacts HRA uptake and assessed HRA acceptability. Methods: Sexual and gender minority individuals were randomised to home-based self-sampling or clinical sampling. All were asked to attend in-clinic HRA 1 year later. We regressed HRA attendance on study arm using multivariable Poisson regression and assessed HRA acceptability using χ 2 tests. Results: A total of 62.8% of 196 participants who engaged in screening attended HRA. Although not significant (P = 0.13), a higher proportion of participants who engaged in clinic-based screening attended HRA (68.5%) compared to home-based participants (57.9%). Overall, HRA uptake was higher among participants with anal cytology history (aRR 1.40, 95% CI 1.07–1.82), and lower among participants preferring a versatile anal sex position versus insertive (aRR 0.70, 95% CI 0.53–0.91), but did not differ by race or HIV serostatus. In the clinic arm, persons living with HIV had lower HRA attendance (42.9%) versus HIV-negative participants (73.3%) (P = 0.02) and Black non-Hispanic participants had lower HRA attendance (41.7%) than White non-Hispanic participants (73.1%), (P = 0.04). No differences in attendance by race or HIV status were observed in the home arm. Conclusions: HRA uptake differed significantly by race and HIV status in the clinic arm but not the home arm. Anal cancer disproportionately affects men who have sex with men living with HIV. We examined whether anal HPV sampling at home versus in a clinic impacts uptake of high-resolution anoscopy (HRA), an in-clinic procedure. Anal cytology history and insertive anal sex position were associated with higher HRA uptake, and attendance differed by race and HIV status in the clinic arm. Given that people living with HIV and Black men who have sex with men are disproportionately affected by anal cancer, interventions are needed to support their clinic attendance. [ABSTRACT FROM AUTHOR]

Published
2024
Full Text
View/download PDF

5. On-orbit Calibration and Performance of the EMIT Imaging Spectrometer

Author

Thompson, David, primary, Thompson, David R, additional, Green, Robert O, additional, Bradley, Christine, additional, Brodrick, Philip G, additional, Dor, Ben, additional, Bennett, Matthew, additional, Bernas, Michael, additional, Carmon, Nimrod, additional, Chadwick, K Dana, additional, Clark, Roger N, additional, Coleman, Red Willow, additional, Cox, Evan, additional, Diaz, Ernesto, additional, Eastwood, Michael L, additional, Eckert, Regina, additional, Ehlmann, Bethany, additional, Ginoux, Paul, additional, Ageitos, María Gonçalves, additional, Grant, Kathleen, additional, Guanter, Louis, additional, Pearlshtien, Daniela Heller, additional, Helmlinger, Mark, additional, Herzog, Harrison, additional, Hoefen, Todd, additional, Huang, Yue, additional, Keebler, Abigail, additional, Kalashnikova, Olga, additional, Keymeulen, Didier, additional, Kokaly, Raymond, additional, Klose, Martina, additional, Li, Longlei, additional, Lundeen, Sarah, additional, Mahowald, Natalie, additional, Meyer, John, additional, Middleton, Elizabeth, additional, Miller, Ron L, additional, Mouroulis, Pantazis, additional, Oaida, Bogdan, additional, Obiso, Vicenzo, additional, Ochoa, Francisco, additional, Olson-Duvall, Winston, additional, Okin, Gregory S, additional, Painter, Thomas H, additional, García-Pando, Carlos Pérez, additional, Realmuto, Vincent, additional, Shaw, Lucas, additional, Sullivan, Peter, additional, Thingvold, Erik, additional, Thorpe, Andrew K, additional, Swayze, Gregg, additional, Vannan, Suresh, additional, Villarreal, Catalina, additional, Pollock, Harold R, additional, Ung, Charlene, additional, Wilson, Daniel W, additional, and Zandbergen, Sander, additional

Published
2023
Full Text
View/download PDF

6. The Earth Surface Mineral Dust Source Investigation: An Earth Science Imaging Spectroscopy Mission

Author

Miller, Ron, Mouroulis, Pantazis, Oaida, Bogdan, Okin, Greg, Ortega, Alberto, Oyake, Amalaye, Nguyen, Hung, Pace, Theresa, Painter, Thomas H, Pempejian, Jack, Perez Garcia-Pando, Carlos, Pham, Thang, Phillips, Benjamin, Pollock, Randy, Purcell, Richard, Realmuto, Vincent, Schoolcraft, Josh, Sen, Amit, Shin, Simon, Shaw, Lucas, Soriano, Manny, Duren, Riley, Eastwood, Michael, Ehlmann, Bethany, Fuentes, Lisa, Ginoux, Paul, Gross, Johannes, He, Yutao, Kalashnikova, Olga, Kert, William, Keymeulen, Didier, Klimesh, Matt, Ku, Daniel, Kwong-Fu, Helenann, Liggett, Elliott, Lundeen, Sarah, Makowski, Maciej D, Mazer, Alan, Swayze, Gregg, Thingvold, Erik, Vaid, Afsheen, Zan, Jason, Green, Robert O, Mahowald, Natalie, Ung, Charlene, Thompson, David R, Bator, Lori, Bennet, Matthew, Bernas, Michael, Blackway, Natalie, Bradley, Christine, Cha, Jeff, Clark, Pamela, Clark, Roger, Cloud, Deborah, Diaz, Ernesto, and Dor, Eyal Ben

Abstract

The Earth Surface Mineral Dust Source Investigation, EMIT, is planned to operate from the International Space Station starting no earlier than the fall of 2021. EMIT will use visible to short wavelength infrared imaging spectroscopy to determine the mineral composition of the arid land dust source regions of the Earth to advance our knowledge of the radiative forcing effect of these aerosols. Mineral dust emitted into the atmosphere under high wind conditions is an element of the Earth system with many impacts to the Earth’s energy balance, atmosphere, surface, and oceans. The Earth’s mineral dust cycle with source, transport, and deposition phases are studied with advanced Earth System Models. Because the chemical composition, optical and surface properties of soil particles vary strongly with the mineral composition of the source, these models require knowledge of surface soil mineral dust source composition knowledge to accurately understand dust impacts on the Earth system now and in the future. At present, compositional knowledge of the Earth’s mineral dust source regions from existing data sets is uncertain as a result of limited measurements. EMIT will use spectroscopically derived surface mineral composition to update the prescribe boundary conditions for state-of-the-art Earth System Models. The EMIT-initialized models will be used to investigate the impact of direct radiative forcing in the Earth system that depends strongly on the composition of the mineral dust aerosols emitted into the atmosphere. These new measurements and related products will be used to address the EMIT science objectives and made available to the science community for additional investigations. An overview of the EMIT science, development, and mission is presented in this paper.

Published
2020

7. The Earth Surface Mineral Dust Source Investigation: An Earth Science Imaging Spectroscopy Mission

Author

Green, Robert O, Mahowald, Natalie, Ung, Charlene, Thompson, David R, Bator, Lori, Bennet, Matthew, Bernas, Michael, Blackway, Natalie, Bradley, Christine, Cha, Jeff, Clark, Pamela, Clark, Roger, Cloud, Deborah, Diaz, Ernesto, Dor, Eyal Ben, Duren, Riley, Eastwood, Michael, Ehlmann, Bethany, Fuentes, Lisa, Ginoux, Paul, Gross, Johannes, He, Yutao, Kalashnikova, Olga, Kert, William, Keymeulen, Didier, Klimesh, Matt, Ku, Daniel, Kwong-Fu, Helenann, Liggett, Elliott, Lundeen, Sarah, Makowski, Maciej D, Mazer, Alan, Miller, Ron, Mouroulis, Pantazis, Oaida, Bogdan, Okin, Greg, Ortega, Alberto, Oyake, Amalaye, Nguyen, Hung, Pace, Theresa, Painter, Thomas H, Pempejian, Jack, Perez Garcia-Pando, Carlos, Pham, Thang, Phillips, Benjamin, Pollock, Randy, Purcell, Richard, Realmuto, Vincent, Schoolcraft, Josh, Sen, Amit, Shin, Simon, Shaw, Lucas, Soriano, Manny, Swayze, Gregg, Thingvold, Erik, Vaid, Afsheen, and Zan, Jason

Published
2020

8. Performance and Early Results from the Earth Surface Mineral Dust Source Investigation (EMIT) Imaging Spectroscopy Mission

Author

Green, Robert O., primary, Mahowald, Natalie, additional, Thompson, David R., additional, Ung, Charlene, additional, Brodrick, Phil, additional, Pollock, Randy, additional, Bennett, Matthew, additional, Lundeen, Sarah, additional, Joyce, Michael, additional, Olson-Duvall, Winston, additional, Oaida, Bogdan, additional, Bradley, Christine, additional, Diaz, Ernesto, additional, Clark, Roger, additional, Vannan, Suresh, additional, Swayze, Gregg, additional, Kokaly, Ray, additional, Ginoux, Paul, additional, Miller, Ron, additional, Okin, Gregory, additional, Garcia-Pando, Carlos Perez, additional, Ehlmann, Bethany, additional, Kalashnikova, Olga, additional, Painter, Thomas H., additional, Realmuto, Vincent, additional, Chadwick, Dana, additional, Ben-Dor, Eyal, additional, Pearlshtien, Daniela Heller, additional, Guanter, Luis, additional, Phillips, Benjamin, additional, Reath, Kevin, additional, Thorpe, Andrew, additional, Shaw, Lucas, additional, Keebler, Abigail, additional, Ochoa, Francisco, additional, Grant, Kathleen, additional, Sen, Amit, additional, Duren, Riley, additional, Obiso, Vincenzo, additional, Gonçalves-Ageitos, Maria, additional, and Huang, Yue, additional

Published
2023
Full Text
View/download PDF

9. Home‐based self‐sampling vs clinician sampling for anal precancer screening: The Prevent Anal Cancer Self‐Swab Study.

Author

Nyitray, Alan G., Nitkowski, Jenna, McAuliffe, Timothy L., Brzezinski, Bridgett, Swartz, Michael D., Fernandez, María E., Deshmukh, Ashish A., Ridolfi, Timothy J., Lundeen, Sarah J., Cockerham, Leslie, Wenten, Dave, Petroll, Andrew, Hilgeman, Brian, Smith, Jennifer S., Chiao, Elizabeth Y., Giuliano, Anna R., and Schick, Vanessa

Subjects
ANAL cancer, MEDICAL screening, SEXUAL minority men, HUMAN papillomavirus, PRECANCEROUS conditions
Abstract

Sexual minority men are at increased risk for anal squamous cell carcinoma. Our objective was to compare screening engagement among individuals randomized to self‐collect an anal canal specimen at home or to attend a clinic appointment. Specimen adequacy was then assessed for human papillomavirus (HPV) DNA genotyping. A randomized trial recruited cisgendered sexual minority men and transgender people in the community and assigned them to use a home‐based self‐collection swabbing kit or attend a clinic‐based swabbing. Swabs were sent for HPV genotyping. The proportions of participants completing screening in each study arm and the adequacy of their specimens for HPV genotyping were assessed. Relative risks were estimated for factors associated with screening. A total of 240 individuals were randomized. Age (median, 46 years) and HIV status (27.1% living with HIV) did not differ by study arm. A total of 89.2% and 74.2% of home‐arm and clinic‐arm individuals returned the swab, respectively (P =.003), difference between groups, 15.0% (95% CI 5.4%‐24.6%). Among black individuals, 96.2% and 63.2% in the home and clinic arms screened (P =.006). Among individuals with HIV, 89.5% and 51.9% in the home and clinic arms screened (P <.001). Self‐collected swabs and clinician‐collected swabs were comparable in adequacy for HPV genotyping (96.3% and 93.3%, respectively). People at highest risk for anal cancer may be more likely to screen if they are able to self‐collect swabs at home rather than attend a clinic. [ABSTRACT FROM AUTHOR]

Published
2023
Full Text
View/download PDF

13. High performance space data acquisition and compression with embedded system-on-chip instrument avionics for space-based Next Generation Imaging Spectrometers (NGIS)

Author

Smith, Adam, Crocker, Ken, Holyoake, Chris, Roth, Kevin, Dolman, David, Dolinar, Sam, Cheng, Michael, Mccubbin, Ian, Green, Robert, Eastwood, Michael, Riddley, Jason, Shin, Simon, Ghossemi, Hamid, Pham, Thang, Lundeen, Sarah, Olson-Duvall, Winston, Thompson, David, Sarture, Charles, Bernas, Michael, Sullivan, Peter, Liggett, Eliott, Kiely, Aaron, Klimesh, Matthew, Luong, Huy, and Keymeulen, Didier

Abstract

UNKNOWN

Published
2018

14. High performance space data acquisition and compression with embedded system-on-chip instrument avionics for space-based Next Generation Imaging Spectrometers (NGIS)

Author

Keymeulen, Didier, Luong, Huy, Klimesh, Matthew, Kiely, Aaron, Liggett, Eliott, Sullivan, Peter, Bernas, Michael, Sarture, Charles, Thompson, David, Olson-Duvall, Winston, Lundeen, Sarah, Pham, Thang, Ghossemi, Hamid, Shin, Simon, Riddley, Jason, Eastwood, Michael, Green, Robert, Mccubbin, Ian, Cheng, Michael, Dolinar, Sam, Dolman, David, Roth, Kevin, Holyoake, Chris, Crocker, Ken, and Smith, Adam

Published
2018

21. The Earth surface mineral dust source investigation: An Earth Science imaging spectroscopy mission

Author

Green, Robert O., Mahowald, Natalie, Ung, Charlene, Thompson, David R., Bator, Lori, Bennet, Matthew, Bernas, Michael, Blackway, Natalie, Bradley, Christine, Cha, Jeff, Clark, Pamela, Clark, Roger, Cloud, Deborah, Diaz, Ernesto, Dor, Eyal Ben, Duren, Riley, Eastwood, Michael, Ehlmann, Bethany L., Fuentes, Lisa, Ginoux, Paul, Gross, Johannes, He, Yutao, Kalashnikova, Olga, Kert, William, Keymeulen, Didier, Klimesh, Matt, Ku, Daniel, Kwong-Fu, Helenann, Liggett, Elliott, Li, Longlie, Lundeen, Sarah, Makowski, Maciej D., Mazer, Alan, Mouroulis, Pantazis, Oaida, Bogdan, Ortega, Alberto, Oyake, Amalaye, Nguyen, Hung, Pace, Theresa, Painter, Thomas H., Pempejian, Jack, Pérez García-Pando, Carlos, Pham, Thang, Phillips, Benjamin, Pollock, Randy, Purcell, Richard, Realmuto, Vincent, Schoolcraft, Josh, Sen, Amit, Shin, Simon, Shaw, Lucas, Soriano, Manny, Thingvold, Erik, Vaid, Afsheen, Zan, Jason, and Barcelona Supercomputing Center

Subjects
Mineral dusts, Atmospheric optics, Aerosols, Minerals, Soil, Enginyeria agroalimentària::Ciències de la terra i de la vida [Àrees temàtiques de la UPC], Infrared imaging, Pols, Dust, Astrophysics::Earth and Planetary Astrophysics, Earth systems data and models, Physics::Geophysics
Abstract

The Earth Surface Mineral Dust Source Investigation, EMIT, is planned to operate from the International Space Station starting no earlier than the fall of 2021. EMIT will use visible to short wavelength infrared imaging spectroscopy to determine the mineral composition of the arid land dust source regions of the Earth to advance our knowledge of the radiative forcing effect of these aerosols. Mineral dust emitted into the atmosphere under high wind conditions is an element of the Earth system with many impacts to the Earth's energy balance, atmosphere, surface, and oceans. The Earth's mineral dust cycle with source, transport, and deposition phases are studied with advanced Earth System Models. Because the chemical composition, optical and surface properties of soil particles vary strongly with the mineral composition of the source, these models require knowledge of surface soil mineral dust source composition to accurately understand dust impacts on the Earth system now and in the future. At present, compositional knowledge of the Earth's mineral dust source regions from existing data sets is uncertain as a result of limited measurements. EMIT will use spectroscopically-derived surface mineral composition to update the prescribed boundary conditions for state-of-the-art Earth System Models. The EMIT-initialized models will be used to investigate the impact of direct radiative forcing in the Earth system that depends strongly on the composition of the mineral dust aerosols emitted into the atmosphere. These new measurements and related products will be used to address the EMIT science objectives and made available to the science community for additional investigations. An overview of the EMIT science, development, and mission is presented in this paper. The authors gratefully acknowledge NASA and the Earth System Science Pathfinder program office as well as the broad set of contributors to the EMIT mission. A portion of this work was carried out at the Jet Propulsion Laboratory / California Institute of Technology, Pasadena, California, undercontract with the National Aeronautics and Space Administration.

Published
2020

23. Airborne Imaging Spectroscopy for Mapping Urban Green Pools

Author

Thompson, David R, de la Torre Juarez, Manuel, Barker, Christopher M, Holeman, Jodi, Lundeen, Sarah, Mulligan, Steve, Painter, Thomas H, Podest, Erika, and Seidel, Felix

Subjects
Instrumentation And Photography
Published
2013

24. Evidence for Environmental–Human Microbiota Transfer at a Manufacturing Facility with Novel Work-related Respiratory Disease

Author

Wu, Benjamin G., primary, Kapoor, Bianca, additional, Cummings, Kristin J., additional, Stanton, Marcia L., additional, Nett, Randall J., additional, Kreiss, Kathleen, additional, Abraham, Jerrold L., additional, Colby, Thomas V., additional, Franko, Angela D., additional, Green, Francis H. Y., additional, Sanyal, Soma, additional, Clemente, Jose C., additional, Gao, Zhan, additional, Coffre, Maryaline, additional, Meyn, Peter, additional, Heguy, Adriana, additional, Li, Yonghua, additional, Sulaiman, Imran, additional, Borbet, Timothy C., additional, Koralov, Sergei B., additional, Tallaksen, Robert J., additional, Wendland, Douglas, additional, Bachelder, Vance D., additional, Boylstein, Randy J., additional, Park, Ju-Hyeong, additional, Cox-Ganser, Jean M., additional, Virji, M. Abbas, additional, Crawford, Judith A., additional, Edwards, Nicole T., additional, Veillette, Marc, additional, Duchaine, Caroline, additional, Warren, Krista, additional, Lundeen, Sarah, additional, Blaser, Martin J., additional, and Segal, Leopoldo N., additional

Published
2020
Full Text
View/download PDF

26. The Earth Surface Mineral Dust Source Investigation: An Earth Science Imaging Spectroscopy Mission

Author

Green, Robert O., primary, Mahowald, Natalie, additional, Ung, Charlene, additional, Thompson, David R., additional, Bator, Lori, additional, Bennet, Matthew, additional, Bernas, Michael, additional, Blackway, Natalie, additional, Bradley, Christine, additional, Cha, Jeff, additional, Clark, Pamela, additional, Clark, Roger, additional, Cloud, Deborah, additional, Diaz, Ernesto, additional, Ben Dor, Eyal, additional, Duren, Riley, additional, Eastwood, Michael, additional, Ehlmann, Bethany L., additional, Fuentes, Lisa, additional, Ginoux, Paul, additional, Gross, Johannes, additional, He, Yutao, additional, Kalashnikova, Olga, additional, Kert, William, additional, Keymeulen, Didier, additional, Klimesh, Matt, additional, Ku, Daniel, additional, Kwong-Fu, Helenann, additional, Liggett, Elliott, additional, Li, Longlie, additional, Lundeen, Sarah, additional, Makowski, Maciej D., additional, Mazer, Alan, additional, Miller, Ron, additional, Mouroulis, Pantazis, additional, Oaida, Bogdan, additional, Okin, Greg S., additional, Ortega, Alberto, additional, Oyake, Amalaye, additional, Nguyen, Hung, additional, Pace, Theresa, additional, Painter, Thomas H., additional, Pempejian, Jack, additional, Garcia-Pando, Carlos Perez, additional, Pham, Thang, additional, Phillips, Benjamin, additional, Pollock, Randy, additional, Purcell, Richard, additional, Realmuto, Vincent, additional, Schoolcraft, Josh, additional, Sen, Amit, additional, Shin, Simon, additional, Shaw, Lucas, additional, Soriano, Manny, additional, Swayze, Gregg, additional, Thingvold, Erik, additional, Vaid, Afsheen, additional, and Zan, Jason, additional

Published
2020
Full Text
View/download PDF

27. Permanent Work Disability in Crohnʼs Disease

Author

Ananthakrishnan, Ashwin N., Weber, Lydia R., Knox, Josh F., Skaros, Susan, Emmons, Jeanne, Lundeen, Sarah, Issa, Mazen, Otterson, Mary F., and Binion, David G.

Published
2008

32. Portable Remote Imaging Spectrometer coastal ocean sensor: design, characteristics, and first flight results

Author

Mouroulis, Pantazis, primary, Van Gorp, Byron, additional, Green, Robert O., additional, Dierssen, Heidi, additional, Wilson, Daniel W., additional, Eastwood, Michael, additional, Boardman, Joseph, additional, Gao, Bo-Cai, additional, Cohen, David, additional, Franklin, Brian, additional, Loya, Frank, additional, Lundeen, Sarah, additional, Mazer, Alan, additional, McCubbin, Ian, additional, Randall, David, additional, Richardson, Brandon, additional, Rodriguez, Jose I., additional, Sarture, Charles, additional, Urquiza, Eugenio, additional, Vargas, Rudolph, additional, White, Victor, additional, and Yee, Karl, additional

Published
2014
Full Text
View/download PDF

33. Development, importance, and effect of a ground truth correction for the Moon Mineralogy Mapper reflectance data set

Author

Isaacson, Peter J., primary, Petro, Noah E., additional, Pieters, Carle M., additional, Besse, Sebastien, additional, Boardman, Joseph W., additional, Clark, Roger N., additional, Green, Robert O., additional, Lundeen, Sarah, additional, Malaret, Erick, additional, McLaughlin, Stephanie, additional, Sunshine, Jessica M., additional, and Taylor, Lawrence A., additional

Published
2013
Full Text
View/download PDF

43. Engagement and factors associated with annual anal human papillomavirus screening among sexual and gender minority individuals.

Author

Nitkowski J, Ridolfi TJ, Lundeen SJ, Giuliano AR, Chiao E, Fernandez ME, Schick V, Smith JS, Bruggink P, Brzezinski B, and Nyitray AG

Abstract

Objectives: Annual screening with a provider has been recommended for groups at highest risk for anal cancer. Anal self-sampling could help address screening barriers, yet no studies have examined annual engagement with this method., Methods: The Prevent Anal Cancer Self-Swab Study recruited sexual and gender minority individuals 25 years and over who have sex with men in Milwaukee, Wisconsin to participate in an anal cancer screening study. Participants were randomized to a home or clinic arm. Home-based participants were mailed an anal human papillomavirus self-sampling kit at baseline and 12 months, while clinic-based participants were asked to schedule and attend one of five participating clinics at baseline and 12 months. Using Poisson regression, we conducted an intention-to-treat analysis of 240 randomized participants who were invited to screen at both timepoints., Results: 58.8% of participants completed annual (median=370 days) anal screening. When stratified by HIV status, persons living with HIV had a higher proportion of home (71.1%) versus clinic (22.2%) annual screening ( p <0.001). Non-Hispanic Black participants had a higher proportion of home-based annual anal screening engagement (73.1%) compared to annual clinic screening engagement (31.6%) ( p =0.01). Overall, annual screening engagement was significantly higher among participants who had heard of anal cancer from an LGBTQ organization, reported "some" prior anal cancer knowledge, preferred an insertive anal sex position, and reported a prior cancer diagnosis. Annual screening engagement was significantly lower for participants reporting a medical condition., Conclusions: Annual screening engagement among those at disproportionate anal cancer risk was higher in the home arm.

Published
2024
Full Text
View/download PDF

44. The influence of home versus clinic anal human papillomavirus sampling on high-resolution anoscopy uptake in the Prevent Anal Cancer Self-Swab Study.

Author

Nitkowski J, Ridolfi TJ, Lundeen SJ, Giuliano AR, Chiao E, Fernandez ME, Schick V, Smith JS, Brzezinski B, and Nyitray AG

Abstract

Background: Anal cancer disproportionately affects men who have sex with men (MSM) living with HIV. High-resolution anoscopy (HRA) is an in-clinic procedure to detect precancerous anal lesions and cancer, yet prospective data on factors associated with HRA attendance are lacking. We examined whether anal HPV sampling at home versus in a clinic impacts HRA uptake and assessed HRA acceptability., Method: MSM and trans persons 25 years and older were randomized to home-based self-sampling or clinical sampling. All were asked to attend in-clinic HRA one year later. We regressed HRA attendance on study arm using multivariable Poisson regression and assessed HRA acceptability using χ 2 tests., Results: 62.8% of 196 participants who engaged in screening attended HRA. Although not significant ( p =0.13), a higher proportion of participants who engaged in clinic-based screening attended HRA (68.5%) compared to home-based participants (57.9%). Overall, HRA uptake was higher among participants with anal cytology history (aRR 1.44, 95% CI 1.11 - 1.87) and lower among participants preferring versatile anal sex position versus insertive (aRR 0.70, 95% CI 0.53 - 0.91), but did not differ by race or HIV serostatus. In the clinic arm, persons living with HIV had lower HRA attendance (42.9%) versus HIV-negative participants (73.3%) ( p =0.02) and Black non-Hispanic participants had lower HRA attendance (41.7%) than White non-Hispanic participants (73.1%), ( p =0.04); however, no differences in attendance by race or HIV status were observed in the home arm., Conclusions: HRA uptake differed significantly by race and HIV status in the clinic arm but not the home arm.

Published
2023
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results