Trends in cervical cancer screening research in sub-Saharan Africa: A bibliometric analysis of publications from 2001 to 2020

Sub-Saharan Africa has the highest incidence of cervical cancer globally. However, compared to developed countries, the region has lower uptake of cervical cancer screening. Research contribution and progress in the field of cervical cancer in the region has not been well investigated. This bibliometric review aimed to address this information gap by examining changes in research volume and type over a 20 year time frame. Medline, Embase, PsycINFO, CINAHL, and Cochrane Library were searched to identify peer-reviewed publications about cervical cancer screening in sub-Saharan Africa. Changes (from 2001 to 2020) in the (i) total publications, (ii) number and proportion of data-based publications relative to non-data-based publications, and descriptive relative to intervention publications, and (iii) the number and proportion of publications meeting the EPOC design criteria relative to those not meeting the EPOC design criteria were assessed using a generalised linear Poisson model, a generalised binomial model and the Pearson Chi-squared test respectively. A two-year increase in time was associated with an estimated 32 % increase in the total number of publications. While no measurement studies were recorded, the bulk of data-based publications (89 %) were descriptive studies. Relative to descriptive publications, a 1 % increase in the proportion of intervention publications was observed over time. Only a small proportion (28 %) of intervention studies met the EPOC design criteria. Our findings suggest that researchers and funders in the region should invest more effort and money in measurement and rigorous intervention research to inform outcome measures and cervical cancer screening policy and practice, respectively.