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Obinna Onwujekwe

Obinna Onwujekwe

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Social Sciences and Humanities 69 786 688 1 1 380 57335

Obinna Onwujekwe publications per year

The chart shows the history of publications by Obinna Onwujekwe between 1998 and 2026, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Obinna Onwujekwe published across 29 years, from 1998 to 2026, averaging 16.8 papers a year. Output peaked at 48 publications in 2020. 36 of the 487 publications appeared in the last two years.

No. of publications
10 20 30 40
Bar chart. Horizontal axis: year, 1998 to 2026. Vertical axis: number of publications, 0 to 48. Peak 48 publications in 2020. 1998: 1 publication 1999: 3 publications 2000: 5 publications 2001: 4 publications 2002: 4 publications 2003: 3 publications 2004: 14 publications 2005: 11 publications 2006: 10 publications 2007: 7 publications 2008: 4 publications 2009: 12 publications 2010: 13 publications 2011: 13 publications 2012: 20 publications 2013: 13 publications 2014: 17 publications 2015: 20 publications 2016: 22 publications 2017: 15 publications 2018: 12 publications 2019: 31 publications 2020: 48 publications 2021: 40 publications 2022: 31 publications 2023: 41 publications 2024: 37 publications 2025: 35 publications 2026: 1 publication
1998 2026

487 publications in total across all disciplines

View publications per year as a table
Obinna Onwujekwe: publications per year, 1998 to 2026
Year Publications
1998 1
1999 3
2000 5
2001 4
2002 4
2003 3
2004 14
2005 11
2006 10
2007 7
2008 4
2009 12
2010 13
2011 13
2012 20
2013 13
2014 17
2015 20
2016 22
2017 15
2018 12
2019 31
2020 48
2021 40
2022 31
2023 41
2024 37
2025 35
2026 1
Total 487
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Obinna Onwujekwe publication distribution in Social Sciences and Humanities in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Social Sciences and Humanities in 2026. The highlighted bar marks where Obinna Onwujekwe sits on this spectrum.

No. of scientists
100 200 300 400
Bar chart with 54 bars. Horizontal axis: publications, 44–53 to 570+. Vertical axis: number of scientists, 0 to 474. Most scientists, 474, have 114–123 publications. The last bar groups every scientist with 570 publications or more. The highlighted bar, 374–383 publications, is where this scientist sits. 44–53 publications: 28 scientists 54–63 publications: 61 scientists 64–73 publications: 161 scientists 74–83 publications: 225 scientists 84–93 publications: 301 scientists 94–103 publications: 390 scientists 104–113 publications: 406 scientists 114–123 publications: 474 scientists 124–133 publications: 453 scientists 134–143 publications: 434 scientists 144–153 publications: 407 scientists 154–163 publications: 411 scientists 164–173 publications: 391 scientists 174–183 publications: 313 scientists 184–193 publications: 319 scientists 194–203 publications: 304 scientists 204–213 publications: 285 scientists 214–223 publications: 246 scientists 224–233 publications: 213 scientists 234–243 publications: 170 scientists 244–253 publications: 167 scientists 254–263 publications: 162 scientists 264–273 publications: 138 scientists 274–283 publications: 138 scientists 284–293 publications: 113 scientists 294–303 publications: 106 scientists 304–313 publications: 95 scientists 314–323 publications: 101 scientists 324–333 publications: 81 scientists 334–343 publications: 69 scientists 344–353 publications: 56 scientists 354–363 publications: 36 scientists 364–373 publications: 42 scientists 374–383 publications: 41 scientists 384–393 publications: 44 scientists 394–403 publications: 27 scientists 404–413 publications: 30 scientists 414–423 publications: 20 scientists 424–433 publications: 29 scientists 434–443 publications: 29 scientists 444–453 publications: 25 scientists 454–463 publications: 19 scientists 464–473 publications: 21 scientists 474–483 publications: 11 scientists 484–493 publications: 17 scientists 494–503 publications: 7 scientists 504–513 publications: 6 scientists 514–523 publications: 12 scientists 524–533 publications: 10 scientists 534–543 publications: 7 scientists 544–553 publications: 6 scientists 554–563 publications: 12 scientists 564–569 publications: 8 scientists 570+ publications: 100 scientists
44–53 publications 570+

This scientist: 380 publications — 94th percentile

94% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 570 publications or more.

View publications distribution as a table
Number of Social Sciences and Humanities scientists by publication count, Research.com 2026 ranking edition. Based on 7,777 ranked scientists.
Publications Scientists This scientist
44–53 28
54–63 61
64–73 161
74–83 225
84–93 301
94–103 390
104–113 406
114–123 474
124–133 453
134–143 434
144–153 407
154–163 411
164–173 391
174–183 313
184–193 319
194–203 304
204–213 285
214–223 246
224–233 213
234–243 170
244–253 167
254–263 162
264–273 138
274–283 138
284–293 113
294–303 106
304–313 95
314–323 101
324–333 81
334–343 69
344–353 56
354–363 36
364–373 42
374–383 41 380
384–393 44
394–403 27
404–413 30
414–423 20
424–433 29
434–443 29
444–453 25
454–463 19
464–473 21
474–483 11
484–493 17
494–503 7
504–513 6
514–523 12
524–533 10
534–543 7
544–553 6
554–563 12
564–569 8
570+ 100
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Obinna Onwujekwe D-index placement in Social Sciences and Humanities in 2026

The chart shows the D-index (discipline H-index) distribution of Social Sciences and Humanities scientists ranked by Research.com in 2026. The highlighted bar marks where Obinna Onwujekwe sits on this spectrum.

No. of scientists
100 200 300
Bar chart with 71 bars. Horizontal axis: D-Index, 30 to 100+. Vertical axis: number of scientists, 0 to 313. Most scientists, 313, have 42 D-Index. The last bar groups every scientist with 100 D-Index or more. The highlighted bar, 69 D-Index, is where this scientist sits. 30 D-Index: 177 scientists 31 D-Index: 210 scientists 32 D-Index: 222 scientists 33 D-Index: 188 scientists 34 D-Index: 181 scientists 35 D-Index: 243 scientists 36 D-Index: 261 scientists 37 D-Index: 272 scientists 38 D-Index: 278 scientists 39 D-Index: 300 scientists 40 D-Index: 297 scientists 41 D-Index: 308 scientists 42 D-Index: 313 scientists 43 D-Index: 300 scientists 44 D-Index: 269 scientists 45 D-Index: 260 scientists 46 D-Index: 228 scientists 47 D-Index: 251 scientists 48 D-Index: 203 scientists 49 D-Index: 186 scientists 50 D-Index: 187 scientists 51 D-Index: 166 scientists 52 D-Index: 138 scientists 53 D-Index: 141 scientists 54 D-Index: 131 scientists 55 D-Index: 137 scientists 56 D-Index: 109 scientists 57 D-Index: 129 scientists 58 D-Index: 95 scientists 59 D-Index: 105 scientists 60 D-Index: 106 scientists 61 D-Index: 86 scientists 62 D-Index: 94 scientists 63 D-Index: 77 scientists 64 D-Index: 79 scientists 65 D-Index: 59 scientists 66 D-Index: 68 scientists 67 D-Index: 51 scientists 68 D-Index: 49 scientists 69 D-Index: 40 scientists 70 D-Index: 43 scientists 71 D-Index: 40 scientists 72 D-Index: 50 scientists 73 D-Index: 46 scientists 74 D-Index: 43 scientists 75 D-Index: 45 scientists 76 D-Index: 45 scientists 77 D-Index: 30 scientists 78 D-Index: 25 scientists 79 D-Index: 31 scientists 80 D-Index: 29 scientists 81 D-Index: 18 scientists 82 D-Index: 21 scientists 83 D-Index: 26 scientists 84 D-Index: 15 scientists 85 D-Index: 15 scientists 86 D-Index: 19 scientists 87 D-Index: 19 scientists 88 D-Index: 12 scientists 89 D-Index: 7 scientists 90 D-Index: 19 scientists 91 D-Index: 20 scientists 92 D-Index: 13 scientists 93 D-Index: 9 scientists 94 D-Index: 13 scientists 95 D-Index: 8 scientists 96 D-Index: 7 scientists 97 D-Index: 6 scientists 98 D-Index: 6 scientists 99 D-Index: 6 scientists 100+ D-Index: 97 scientists
30 D-Index 100+

This scientist: 69 D-Index — 90th percentile

90% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 100 D-Index or more.

View D-Index distribution as a table
Number of Social Sciences and Humanities scientists by D-index, Research.com 2026 ranking edition. Based on 7,777 ranked scientists.
D-Index Scientists This scientist
30 177
31 210
32 222
33 188
34 181
35 243
36 261
37 272
38 278
39 300
40 297
41 308
42 313
43 300
44 269
45 260
46 228
47 251
48 203
49 186
50 187
51 166
52 138
53 141
54 131
55 137
56 109
57 129
58 95
59 105
60 106
61 86
62 94
63 77
64 79
65 59
66 68
67 51
68 49
69 40 69
70 43
71 40
72 50
73 46
74 43
75 45
76 45
77 30
78 25
79 31
80 29
81 18
82 21
83 26
84 15
85 15
86 19
87 19
88 12
89 7
90 19
91 20
92 13
93 9
94 13
95 8
96 7
97 6
98 6
99 6
100+ 97
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Overview

Obinna Onwujekwe is affiliated with the University of Nigeria in Nigeria. Their research spans multiple fields, primarily focusing on Medicine, Health Professions, and Economics, Econometrics, and Finance. Within these broader fields, Onwujekwe's work includes significant engagement with General Health Professions, Pediatrics, Perinatology and Child Health, Finance, Economics and Econometrics, and Health as subfields.

The main topics addressed in their work involve Global Maternal and Child Health, Healthcare Systems and Reforms, Adolescent Sexual and Reproductive Health, Global Health Care Issues, Healthcare Policy and Management, Vaccine Coverage and Hesitancy, and COVID-19 epidemiological studies.

Onwujekwe's recent publications include:

  • The Lancet Nigeria Commission: investing in health and the future of the nation (2022, The Lancet)
  • Morbidity and mortality from road injuries: results from the Global Burden of Disease Study 2017 (2020, Injury Prevention)
  • Exploring factors constraining utilization of contraceptive services among adolescents in Southeast Nigeria: an application of the socio-ecological model (2020, BMC Public Health)
  • Exploring issues in caregivers and parent communication of sexual and reproductive health matters with adolescents in Ebonyi state, Nigeria (2020, BMC Public Health)
  • Beliefs and misconceptions about contraception and condom use among adolescents in south-east Nigeria (2021, Reproductive Health)

The scientist collaborates frequently with several co-authors, including:

  • Chinyere Mbachu
  • Prince Agwu
  • Ifunanya Clara Agu
  • Nkoli Ezumah
  • Enyi Etiaba

In terms of publication venues, Onwujekwe has a notable presence in:

  • Nigerian Journal of Clinical Practice
  • Health Policy and Planning
  • Frontiers in Public Health
  • Research Square (Research Square)
  • BMC Health Services Research

Best Publications

  • Global burden of 369 diseases and injuries in 204 countries and territories, 1990–2019: a systematic analysis for the Global Burden of Disease Study 2019

    Theo Vos;Theo Vos;Theo Vos;Stephen S. Lim;Cristiana Abbafati;Cristiana Abbafati;Cristiana Abbafati;Kaja M. Abbas;Kaja M. Abbas;Kaja M. Abbas

  • Global burden of 87 risk factors in 204 countries and territories, 1990–2019: a systematic analysis for the Global Burden of Disease Study 2019

    Christopher J.L. Murray;Christopher J.L. Murray;Christopher J.L. Murray;Aleksandr Y. Aravkin;Aleksandr Y. Aravkin;Aleksandr Y. Aravkin;Peng Zheng;Peng Zheng;Peng Zheng;Cristiana Abbafati;Cristiana Abbafati;Cristiana Abbafati

  • Global, regional, and national cancer incidence, mortality, years of life lost, years lived with disability, and disability-adjusted life-years for 29 cancer groups, 1990 to 2017

    Christina Fitzmaurice;Degu Abate;Naghmeh Abbasi;Hedayat Abbastabar

  • Global, regional, and national burden of diabetes from 1990 to 2021, with projections of prevalence to 2050: a systematic analysis for the Global Burden of Disease Study 2021

    Unknown

  • Global age-sex-specific fertility, mortality, healthy life expectancy (HALE), and population estimates in 204 countries and territories, 1950–2019: a comprehensive demographic analysis for the Global Burden of Disease Study 2019

    Haidong Wang;Kaja M. Abbas;Mitra Abbasifard;Mohsen Abbasi-Kangevari

  • The global burden of cancer attributable to risk factors, 2010–19: a systematic analysis for the Global Burden of Disease Study 2019

    Unknown

  • Five insights from the Global Burden of Disease Study 2019

    Christopher J.L. Murray;Cristiana Abbafati;Kaja M. Abbas;Mohammad Abbasi

  • Measuring socio-economic position for epidemiological studies in low- and middle-income countries: a methods of measurement in epidemiology paper

    Laura D Howe;Bruna Galobardes;Alicia Matijasevich;David Gordon

  • Measuring universal health coverage based on an index of effective coverage of health services in 204 countries and territories, 1990-2019 : a systematic analysis for the Global Burden of Disease Study 2019.

    Rafael Lozano;Nancy Fullman;John Everett Mumford;Megan Knight

  • Past, present, and future of global health financing: A review of development assistance, government, out-of-pocket, and other private spending on health for 195 countries, 1995-2050

    Angela Y. Chang;Krycia Cowling;Angela E. Micah;Abigail Chapin

  • Measuring the availability of human resources for health and its relationship to universal health coverage for 204 countries and territories from 1990 to 2019: a systematic analysis for the Global Burden of Disease Study 2019

    Unknown

  • Global, regional, and national progress towards Sustainable Development Goal 3.2 for neonatal and child health: all-cause and cause-specific mortality findings from the Global Burden of Disease Study 2019.

    Katherine R Paulson;Aruna M Kamath;Tahiya Alam;Kelly Bienhoff

  • The Lancet Nigeria Commission: investing in health and the future of the nation

    Unknown

  • Health care financing in Nigeria: Implications for achieving universal health coverage

    Bsc Uzochukwu;Ughasoro;E Etiaba;C Okwuosa

  • Measuring routine childhood vaccination coverage in 204 countries and territories, 1980–2019: a systematic analysis for the Global Burden of Disease Study 2020, Release 1

    Unknown

  • Global investments in pandemic preparedness and COVID-19: development assistance and domestic spending on health between 1990 and 2026

    Unknown

  • Global, regional, and national mortality among young people aged 10–24 years, 1950–2019: a systematic analysis for the Global Burden of Disease Study 2019

    Joseph L Ward;Peter S Azzopardi;Kate Louise Francis;John S Santelli

  • Mapping 123 million neonatal, infant and child deaths between 2000 and 2017

    Roy Burstein;Nathaniel J. Henry;Michael L. Collison;Laurie B. Marczak

  • Assessing performance of the Healthcare Access and Quality Index, overall and by select age groups, for 204 countries and territories, 1990–2019: a systematic analysis from the Global Burden of Disease Study 2019

    Unknown

  • Willingness to pay for community-based health insurance in Nigeria: do economic status and place of residence matter?

    Obinna Onwujekwe;Ekechi Okereke;Chima Onoka;Benjamin Uzochukwu

  • The global distribution of lymphatic filariasis, 2000–18: a geospatial analysis

    Aniruddha Deshpande;Molly K. Miller-Petrie;Paulina A. Lindstedt;Mathew M. Baumann

  • Some indicators of socio-economic status may not be reliable and use of indices with these data could worsen equity.

    Obinna Onwujekwe;Obinna Onwujekwe;Kara Hanson;Julia Fox-Rushby

  • Socio-economic differences and health seeking behaviour for the diagnosis and treatment of malaria: a case study of four local government areas operating the Bamako initiative programme in south-east Nigeria

    Benjamin Sc Uzochukwu;Obinna E Onwujekwe

  • Willingness to pay for rapid diagnostic tests for the diagnosis and treatment of malaria in southeast Nigeria: ex post and ex ante

    Benjamin Sc Uzochukwu;Obinna E Onwujekwe;Nkoli P Uguru;Maduka D Ughasoro

  • Determinants of non-adherence to subsidized anti-retroviral treatment in southeast Nigeria.

    B S C Uzochukwu;O E Onwujekwe;A C Onoka;C Okoli

  • Community satisfaction with the quality of maternal and child health services in southeast Nigeria.

    B. S. C. Uzochukwu;O. E. Onwujekwe;C. O. Akpala

Frequent Co-Authors

Benjamin Uzochukwu
Benjamin Uzochukwu University of Nigeria
Kara Hanson
Kara Hanson London School of Hygiene & Tropical Medicine
Ali H. Mokdad
Ali H. Mokdad University of Washington
Simon I. Hay
Simon I. Hay University of Washington
Shafiu Mohammed
Shafiu Mohammed Ahmadu Bello University
Virginia Wiseman
Virginia Wiseman London School of Hygiene & Tropical Medicine
Ted R. Miller
Ted R. Miller Pacific Institute
Mustafa Z Younis
Mustafa Z Younis Jackson State University
Florian Fischer
Florian Fischer Charité - University Medicine Berlin
Tuomo J. Meretoja
Tuomo J. Meretoja University of Helsinki

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