Sarah Karanja

2.4k total citations · 1 hit paper
34 papers, 1.6k citations indexed

About

Sarah Karanja is a scholar working on General Health Professions, Infectious Diseases and Pediatrics, Perinatology and Child Health. According to data from OpenAlex, Sarah Karanja has authored 34 papers receiving a total of 1.6k indexed citations (citations by other indexed papers that have themselves been cited), including 15 papers in General Health Professions, 12 papers in Infectious Diseases and 10 papers in Pediatrics, Perinatology and Child Health. Recurrent topics in Sarah Karanja's work include HIV/AIDS Research and Interventions (10 papers), Global Maternal and Child Health (10 papers) and Mobile Health and mHealth Applications (9 papers). Sarah Karanja is often cited by papers focused on HIV/AIDS Research and Interventions (10 papers), Global Maternal and Child Health (10 papers) and Mobile Health and mHealth Applications (9 papers). Sarah Karanja collaborates with scholars based in Kenya, Canada and United Kingdom. Sarah Karanja's co-authors include Richard Lester, Lehana Thabane, Carlo A. Marra, Lawrence Gelmon, Joshua Kimani, Edward J. Mills, Michael H. Chung, Paul Ritvo, Benson Estambale and Francis A. Plummer and has published in prestigious journals such as The Lancet, SHILAP Revista de lepidopterología and PLoS ONE.

In The Last Decade

Sarah Karanja

32 papers receiving 1.5k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Effects of a mobile phone short message service on antiretroviral treatment adherence in Kenya (WelTel Kenya1): a randomised trial

2010 989 citations Richard Lester, Paul Ritvo et al. profile →

Peers

Sarah Karanja

GHP

EPIDE

PPCH

Lawrence Gelmon Kenya

Cristian Pop-Eleches United States

Duncan Ngare United States

Angella Musiimenta Uganda

Sarah Iribarren United States

Jennifer Pellowski United States

John E. Sidle United States

Hacsi Horváth United States

Larry W. Chang United States

Krisda H. Chaiyachati United States

Lawrence Gelmon Kenya

Sarah Karanja

993 ×0.9

GHP

909 ×1.3

372 ×0.9

484 ×2.1

EPIDE

119 ×0.6

PPCH

Citations per year, relative to Sarah Karanja Sarah Karanja (= 1×) peers Lawrence Gelmon

Countries citing papers authored by Sarah Karanja

Since Specialization

Citations

This map shows the geographic impact of Sarah Karanja's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Sarah Karanja with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Sarah Karanja more than expected).

Fields of papers citing papers by Sarah Karanja

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Sarah Karanja. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Sarah Karanja. The network helps show where Sarah Karanja may publish in the future.

Co-authorship network of co-authors of Sarah Karanja

This figure shows the co-authorship network connecting the top 25 collaborators of Sarah Karanja. A scholar is included among the top collaborators of Sarah Karanja based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Sarah Karanja. Sarah Karanja is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

Allen, Luke, Min Kim, David Macleod, et al.. (2025). Protocol for an adaptive platform trial of intended service user-derived interventions to equitably reduce non-attendance in eye screening programmes in Botswana, India, Kenya and Nepal. BMJ Open. 15(1). e085353–e085353.

Allen, Luke, Sarah Karanja, Michael Gichangi, et al.. (2025). Identifying barriers and potential solutions to improve equitable access to community eye services: an exploratory sequential mixed methods study protocol. BMJ Open. 15(1). e082975–e082975. 2 indexed citations

Allen, Luke, et al.. (2025). Comparison of Telephone and In-Person Interview Modalities: Duration, Richness, and Costs in the Context of Exploring Determinants of Equitable Access to Community Health Services in Meru, Kenya. International Journal of Qualitative Methods. 24. 1 indexed citations

Bukania, Zipporah, et al.. (2025). Prevalence and predictors of depressive symptoms among school-going adolescents in Kenya. PLOS mental health.. 2(11). e0000474–e0000474.

Allen, Luke, et al.. (2024). A Protocol for the Comparison of Telephone and In-Person Interview Modalities: Duration, Richness, and Costs in the Context of Exploring Determinants of Equitable Access to Community Health Services in Meru, Kenya. International Journal of Qualitative Methods. 23. 2 indexed citations

Karanja, Sarah, et al.. (2024). Impact of the COVID-19 pandemic and policy response on access to and utilization of reproductive, maternal, child and adolescent health services in Kenya, Uganda and Zambia. SHILAP Revista de lepidopterología. 4(1). e0002740–e0002740. 3 indexed citations

Allen, Luke, Iris Gordon, Sarah Karanja, et al.. (2023). Rapid methods for identifying barriers and solutions to improve access to community health services: a scoping review. BJGP Open. 7(4). BJGPO.2023.0047–BJGPO.2023.0047. 2 indexed citations

Karanja, Sarah, S. Bertel Squire, Stephen Mulupi, et al.. (2022). Stakeholder perspectives around post-TB wellbeing and care in Kenya and Malawi. SHILAP Revista de lepidopterología. 2(9). e0000510–e0000510. 3 indexed citations

Thiam, Sylla, et al.. (2021). Determinants of quality in home-based management of malaria by community health volunteers in rural Kenya. The Journal of Infection in Developing Countries. 15(7). 897–903. 3 indexed citations

10.

Karanja, Sarah, et al.. (2021). Knowledge, attitudes, practices, and the effects of COVID-19 among the youth in Kenya. BMC Public Health. 21(1). 1020–1020. 18 indexed citations

11.

Muhula, Samuel, et al.. (2021). The impact of community led alternative rite of passage on eradication of female genital mutilation/cutting in Kajiado County, Kenya: A quasi-experimental study. PLoS ONE. 16(4). e0249662–e0249662. 9 indexed citations

12.

Karanja, Sarah, et al.. (2021). The prevalence and associated factors of undernutrition among under-five children in South Sudan using the standardized monitoring and assessment of relief and transitions (SMART) methodology. BMC Nutrition. 7(1). 25–25. 17 indexed citations

13.

Karanja, Sarah, et al.. (2020). Community health volunteers’ contribution to tuberculosis patients notified to National Tuberculosis program through contact investigation in Kenya. BMC Public Health. 20(1). 1184–1184. 10 indexed citations

14.

Karanja, Sarah, et al.. (2019). The effects of HIV self-testing kits in increasing uptake of male partner testing among pregnant women attending antenatal clinics in Kenya: a randomized controlled trial. Pan African Medical Journal. 33. 213–213. 18 indexed citations

15.

Kop, Mia L. van der, Samuel Muhula, Lehana Thabane, et al.. (2018). Effect of an interactive text-messaging service on patient retention during the first year of HIV care in Kenya (WelTel Retain): an open-label, randomised parallel-group study. The Lancet Public Health. 3(3). e143–e152. 50 indexed citations

16.

Kazi, Abdul Momin, et al.. (2017). Assessing Mobile Phone Access and Perceptions for Texting-Based mHealth Interventions Among Expectant Mothers and Child Caregivers in Remote Regions of Northern Kenya: A Survey-Based Descriptive Study. JMIR Public Health and Surveillance. 3(1). e5–e5. 43 indexed citations

17.

Patel, Anik R., Richard Lester, Carlo A. Marra, et al.. (2017). The validity of the SF-12 and SF-6D instruments in people living with HIV/AIDS in Kenya. Health and Quality of Life Outcomes. 15(1). 143–143. 17 indexed citations

18.

Karanja, Sarah, et al.. (2016). Acceptability, Usability, and Views on Deployment of Peek, a Mobile Phone mHealth Intervention for Eye Care in Kenya: Qualitative Study. JMIR mhealth and uhealth. 4(2). e30–e30. 64 indexed citations

19.

Kop, Mia L. van der, David Ojakaa, Anik R. Patel, et al.. (2013). The effect of weekly short message service communication on patient retention in care in the first year after HIV diagnosis: study protocol for a randomised controlled trial (WelTel Retain). BMJ Open. 3(6). e003155–e003155. 37 indexed citations

20.

Izulla, Preston, Lyle R. McKinnon, Sarah Karanja, et al.. (2012). HIV Postexposure Prophylaxis in an Urban Population of Female Sex Workers in Nairobi, Kenya. JAIDS Journal of Acquired Immune Deficiency Syndromes. 62(2). 220–225. 20 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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