Table 3.

Summary of the characteristics of included articles (n=495)

Characteristic	n (%)
Published in a journal with
Impact factor	45 (9)
Open access	342 (69)
General scope	239 (48)
Commercial publisher	205 (41)
African Journals Partnership Project membership	35 (7)
Country of corresponding author
Nigeria	250 (51)
South Africa	83 (17)
Other African country	99 (20)
Non-African country	63 (13)
Type of study
Cross sectional study	247 (50)
Retrospective study	65 (13)
Case report	42 (9)
Trial	36 (7)
Cohort study	22 (4)
Review	21 (4)
Case control study	12 (2)
Other	50 (10)