O. J. Johansen

964 total citations
16 papers, 692 citations indexed

About

O. J. Johansen is a scholar working on Pediatrics, Perinatology and Child Health, Epidemiology and Surgery. According to data from OpenAlex, O. J. Johansen has authored 16 papers receiving a total of 692 indexed citations (citations by other indexed papers that have themselves been cited), including 7 papers in Pediatrics, Perinatology and Child Health, 4 papers in Epidemiology and 3 papers in Surgery. Recurrent topics in O. J. Johansen's work include Prenatal Screening and Diagnostics (4 papers), Acute Lymphoblastic Leukemia research (3 papers) and Pregnancy and preeclampsia studies (2 papers). O. J. Johansen is often cited by papers focused on Prenatal Screening and Diagnostics (4 papers), Acute Lymphoblastic Leukemia research (3 papers) and Pregnancy and preeclampsia studies (2 papers). O. J. Johansen collaborates with scholars based in Norway, United States and Denmark. O. J. Johansen's co-authors include S. H. Eik‐Nes, Eva Tegnander, Terje Terjesen, T Bredland, O.D. Sæther, A. Tegnander, Ketil Jarl Holen, Kjell Å. Salvesen, Runa Heimstad and Lars‐Åke Mattsson and has published in prestigious journals such as The Journal of Pediatrics, Obstetrics and Gynecology and Ultrasound in Obstetrics and Gynecology.

In The Last Decade

O. J. Johansen

14 papers receiving 660 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
O. J. Johansen Norway	10	311	223	199	134	103	16	692
L. Masini Italy	13	193 0.6×	119 0.5×	209 1.1×	96 0.7×	96 0.9×	44	661
C. M. Bilardo Netherlands	12	234 0.8×	137 0.6×	545 2.7×	146 1.1×	306 3.0×	26	768
Salvator Levi Belgium	10	284 0.9×	133 0.6×	425 2.1×	74 0.6×	70 0.7×	29	710
Yasuo Yumoto Japan	13	125 0.4×	69 0.3×	199 1.0×	77 0.6×	128 1.2×	39	495
Henry Cheng United States	16	243 0.8×	227 1.0×	241 1.2×	140 1.0×	24 0.2×	34	752
Israel Goldstein Israel	19	355 1.1×	125 0.6×	632 3.2×	177 1.3×	278 2.7×	55	1.0k
P. Boulot France	16	196 0.6×	78 0.3×	360 1.8×	78 0.6×	242 2.3×	80	791
Z. Kivilevitch Israel	16	320 1.0×	197 0.9×	416 2.1×	127 0.9×	248 2.4×	53	769
Lílian Maria Lopes Brazil	14	332 1.1×	521 2.3×	244 1.2×	240 1.8×	52 0.5×	40	878
E. Assimakopoulos Greece	14	216 0.7×	78 0.3×	266 1.3×	72 0.5×	309 3.0×	52	871

Countries citing papers authored by O. J. Johansen

Since Specialization

Citations

This map shows the geographic impact of O. J. Johansen'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 O. J. Johansen with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites O. J. Johansen more than expected).

Fields of papers citing papers by O. J. Johansen

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by O. J. Johansen. 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 O. J. Johansen. The network helps show where O. J. Johansen may publish in the future.

Co-authorship network of co-authors of O. J. Johansen

This figure shows the co-authorship network connecting the top 25 collaborators of O. J. Johansen. A scholar is included among the top collaborators of O. J. Johansen 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 O. J. Johansen. O. J. Johansen 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:

16 of 16 papers shown

Skråstad, Ragnhild Bergene, S. H. Eik‐Nes, O. J. Johansen, et al.. (2014). A Randomized Controlled Trial of Third-Trimester Routine Ultrasound in a Nonselected Population. Obstetrical & Gynecological Survey. 69(4). 185–187.

Skråstad, Ragnhild Bergene, S. H. Eik‐Nes, O. J. Johansen, et al.. (2013). A randomized controlled trial of third‐trimester routine ultrasound in a non‐selected population. Acta Obstetricia Et Gynecologica Scandinavica. 92(12). 1353–1360. 35 indexed citations

Johansen, O. J., et al.. (2009). Central pontine myelinolysis A case report with typical neuropathological findings. Acta Neurologica Scandinavica. 73(3). 260–263.

Meberg, Alf, Leif Eskedal, Teresa Farstad, et al.. (2008). First Day of Life Pulse Oximetry Screening to Detect Congenital Heart Defects. The Journal of Pediatrics. 152(6). 761–765. 115 indexed citations

Offerdal, K., et al.. (2008). Prenatal ultrasound detection of facial clefts: a prospective study of 49 314 deliveries in a non‐selected population in Norway. Ultrasound in Obstetrics and Gynecology. 31(6). 639–646. 65 indexed citations

Backe, Bjørn, et al.. (2008). Obstetric brachial plexus palsy: A birth injury not explained by the known risk factors. Acta Obstetricia Et Gynecologica Scandinavica. 87(10). 1027–1032. 49 indexed citations

Heimstad, Runa, Eirik Skogvoll, Lars‐Åke Mattsson, et al.. (2007). Induction of Labor or Serial Antenatal Fetal Monitoring in Postterm Pregnancy. Obstetrics and Gynecology. 109(3). 609–617. 73 indexed citations

Holen, Ketil Jarl, A. Tegnander, T Bredland, et al.. (2002). Universal or selective screening of the neonatal hip using ultrasound?. Journal of Bone and Joint Surgery - British Volume. 84(6). 886–890. 141 indexed citations

Nordbø, Svein Arne, et al.. (2002). [Vertical transmission of hepatitis C virus in Sor-Trondelag].. PubMed. 122(20). 1977–80. 2 indexed citations

10.

Ropstad, Erik, O. J. Johansen, C. King, et al.. (1999). Comparison of Plasma Progesterone, Transrectal Ultrasound and Pregnancy Specific Proteins (PSPB) used for Pregnancy Diagnosis in Reindeer. Acta veterinaria Scandinavica. 40(2). 151–162. 41 indexed citations

11.

Ropstad, Erik, et al.. (1997). Plasma Magnesium, Calcium and Inorganic Phosphorus in Norwegian Semi-Domestic Female Reindeer (Rangifer tarandus tarandus) on Winter Pastures. Acta veterinaria Scandinavica. 38(4). 299–313. 6 indexed citations

12.

Tegnander, Eva, et al.. (1995). Prenatal detection of heart defects at the routine fetal examination at 18 weeks in a non‐selected population. Ultrasound in Obstetrics and Gynecology. 5(6). 372–380. 119 indexed citations

13.

Nygaard, Randi, Peter Johan Moe, H Brincker, et al.. (1989). Late relapses after treatment for acute lymphoblastic leukemia in childhood: A population‐based study from the nordic countries. Medical and Pediatric Oncology. 17(1). 45–47. 22 indexed citations

14.

Skjeldestad, Finn Egil, O. J. Johansen, & Are Dalen. (1987). A Comparative Neonatal Study of Infants Born by Mothers with Chlamydia Trachomatis in Cervix Uteri. Acta Paediatrica. 76(2). 359–360. 3 indexed citations

15.

Johansen, O. J., et al.. (1983). RELAPSE RATE AFTER CESSATION OF THERAPY IN CHILDHOOD LEUKEMIA. Acta Paediatrica. 72(2). 171–174. 8 indexed citations

16.

Johansen, O. J. & Peter Johan Moe. (1980). RELAPSE RATE AFTER CESSATION OF THERAPY IN CHILDHOOD LEUKEMIA. Acta Paediatrica. 69(5). 663–666. 13 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.

Explore authors with similar magnitude of impact