South-South Nigeria university rankings

Total Research Output (TRO)

Total Research Output refers to the total number of scholarly documents produced by a university in mainstream journals. It represents the cumulative volume of research publications attributed to an institution over time. In simple terms, this metric shows how much research a university has contributed without adjusting for staff size or institutional age. Universities with higher TRO values have produced more publications, while those with lower values have contributed fewer. For that reason, TRO serves as a direct indicator of institutional research productivity and gives a clear starting point for comparison.

Data note

Verified Scopus records, accurate as of 12 pm, 9 February 2026.

Formula

TRO = Number of Documents

Usefulness

Gives a direct measure of total research output.
Works well as a baseline ranking before adjusted metrics are applied.
Helps identify institutions with the largest publication volume.

Strengths

Simple and easy to understand.
Based on verifiable publication records.
Useful for descriptive institutional comparison.

Limitations

Favours older institutions with longer publication history.
Does not adjust for staff size.
Does not measure efficiency.

Ranking table

Overall Rank	Block Rank	Institution	Block	Number of Documents	Year established	Age
1	1	University of Benin	Federal	9,534	1,970	56
2	2	University of Calabar	Federal	6,836	1,975	51
3	3	University of Port-Harcourt	Federal	6,497	1,975	51
4	4	University of Uyo	Federal	3,673	1,991	35
5	1	Delta State University Abraka	State	3,437	1,992	34
6	2	Rivers State University	State	2,279	1,979	47
7	3	Ambrose Alli University	State	1,319	1,981	45
8	4	Niger Delta University Wilberforce Island	State	1,257	2,000	26
9	5	Fed. University of Petroleum Res.	Federal	909	2,007	19
10	5	Akwa Ibom State University	State	828	2,010	16
11	6	University of Cross River State	State	726	2,004	22
12	6	Federal University, Otuoke	Federal	489	2,011	15
13	7	Edo University Iyamho	State	484	2,016	10
14	1	Igbinedion University Okada	Private	453	1,999	27
15	8	Delta University of Science and Tech.	State	429	2,021	5
16	2	Benson Idahosa University, Benin City	Private	340	2,002	24
17	9	Bayelsa Medical University, Yenagoa	State	285	2,019	7
18	10	University of Delta, Agbor	State	247	2,021	5
19	11	Dennis Osadebay University, Asaba	State	233	2,021	5
20	12	Ignatius Ajuru University of Education	State	206	2,010	16
21	3	Western Delta University, Oghara	Private	117	2,007	19
22	4	Wellspring University, Evbuobanosa	Private	76	2,009	17
23	5	Topfaith University, Mkpatak	Private	60	2,021	5
24	7	Admiralty University Ibusa	Federal	32	2,023	3

Note: Ranking is based on the total number of Scopus indexed documents associated with each university. Data were extracted from the Scopus database and were accurate as of 12 pm, 9 February 2026.

Derived from the doctoral research of Valentine Joseph Owan on university research performance in South-South Nigeria, University of Calabar, 2026.

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