P. Karma

5.3k total citations · 1 hit paper
142 papers, 4.2k citations indexed

About

P. Karma is a scholar working on Otorhinolaryngology, Epidemiology and Pulmonary and Respiratory Medicine. According to data from OpenAlex, P. Karma has authored 142 papers receiving a total of 4.2k indexed citations (citations by other indexed papers that have themselves been cited), including 64 papers in Otorhinolaryngology, 47 papers in Epidemiology and 34 papers in Pulmonary and Respiratory Medicine. Recurrent topics in P. Karma's work include Ear Surgery and Otitis Media (55 papers), Pneumonia and Respiratory Infections (33 papers) and Bacterial Infections and Vaccines (22 papers). P. Karma is often cited by papers focused on Ear Surgery and Otitis Media (55 papers), Pneumonia and Respiratory Infections (33 papers) and Bacterial Infections and Vaccines (22 papers). P. Karma collaborates with scholars based in Finland, United States and Sweden. P. Karma's co-authors include J. Pukander, Elja Herva, Markku Sipilä, P. Helena Mäkelä, Terhi Kilpi, Arto A. Palmu, Juhani Eskola, Jukka Luotonen, Jukka Jokinen and Helena Käyhty and has published in prestigious journals such as New England Journal of Medicine, The Lancet and Clinical Infectious Diseases.

In The Last Decade

P. Karma

138 papers receiving 3.7k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Efficacy of a Pneumococcal Conjugate Vaccine against Acute Otitis Media

2001 1.2k citations Juhani Eskola, Terhi Kilpi et al. profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
P. Karma Finland	31	2.2k	1.7k	1.4k	1.1k	422	142	4.2k
G. Scott Giebink United States	46	2.8k 1.2×	2.5k 1.5×	1.5k 1.1×	1.6k 1.5×	826 2.0×	197	6.3k
David W. Teele United States	22	1.2k 0.5×	1.8k 1.1×	662 0.5×	1.3k 1.2×	248 0.6×	48	3.4k
Alberto Leiberman Israel	36	1.5k 0.7×	1.4k 0.8×	745 0.5×	1.3k 1.2×	435 1.0×	114	3.8k
Virgil M. Howie United States	31	1.5k 0.7×	1.3k 0.8×	867 0.6×	982 0.9×	128 0.3×	61	2.8k
Janak A. Patel United States	28	1.5k 0.7×	942 0.6×	452 0.3×	849 0.8×	452 1.1×	87	2.9k
Colin D. Marchant United States	33	2.2k 1.0×	640 0.4×	1.2k 0.9×	573 0.5×	372 0.9×	78	3.4k
Tasnee Chonmaitree United States	43	3.5k 1.6×	2.8k 1.7×	1.1k 0.8×	2.4k 2.2×	333 0.8×	113	6.3k
Joel M. Bernstein United States	36	788 0.4×	1.4k 0.9×	583 0.4×	868 0.8×	609 1.4×	121	3.5k
Frederick W. Henderson United States	37	2.6k 1.2×	747 0.5×	392 0.3×	1.4k 1.3×	319 0.8×	68	4.7k
Janet R. Casey United States	32	2.1k 0.9×	862 0.5×	1.4k 1.0×	698 0.6×	84 0.2×	73	3.1k

Countries citing papers authored by P. Karma

Since Specialization

Citations

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

Fields of papers citing papers by P. Karma

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by P. Karma. 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 P. Karma. The network helps show where P. Karma may publish in the future.

Co-authorship network of co-authors of P. Karma

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

20 of 20 papers shown

Palmu, Arto A., et al.. (2004). Association of Clinical Signs and Symptoms with Bacterial Findings in Acute Otitis Media. Clinical Infectious Diseases. 38(2). 234–242. 107 indexed citations

Ogra, Pearay L., Stephen J. Barenkamp, Goro Mogi, et al.. (1998). Microbiology, immunology, and vaccination. Annals of Otology Rhinology & Laryngology. 107(10). 29–49. 2 indexed citations

Jero, Jussi & P. Karma. (1997). Bacteriological Findings and Persistence of Middle Ear Effusion in Otitis Media with Effusion. Acta Oto-Laryngologica. 117(sup529). 22–26. 20 indexed citations

Pitkäranta, Anne, P. Karma, & Tapani Hovi. (1996). Virus-induced interferon production in leukocyte cultures from children with recurrent respiratory infections. A follow-up study. Clinical and Diagnostic Virology. 6(1). 11–16. 2 indexed citations

Nieminen, Tea, Anni Virolainen, Helena Käyhty, et al.. (1996). Antibody-Secreting Cells and their Relation to Humoral Antibodies in Serum and in Nasopharyngeal Aspirates in Children with Pneumococcal Acute Otitis Media. The Journal of Infectious Diseases. 173(1). 136–141. 17 indexed citations

Virolainen, Anni, et al.. (1996). Comparison of serum antibodies to pneumolysin with those to pneumococcal capsular polysaccharides in children with acute otitis media. The Pediatric Infectious Disease Journal. 15(2). 128–133. 17 indexed citations

Karma, P., et al.. (1995). Immunological aspects of otitis media: present views on possibilities of immunoprophylaxis of acute otitis media in infants and children. International Journal of Pediatric Otorhinolaryngology. 32. S127–S134. 7 indexed citations

Tos, M., Margaretha L. Casselbrant, Kathleen A. Daly, et al.. (1994). Epidemiology and natural history of otitis media. Ghent University Academic Bibliography (Ghent University). 8 indexed citations

Karma, P., et al.. (1992). Magnetic Facial Nerve Stimulation in Normal Subjects:Three Groups of Responses. Acta Oto-Laryngologica. 112(sup492). 99–102. 11 indexed citations

10.

Karma, P., et al.. (1992). Magnetic Facial Nerve Stimulation in Bell's Palsy. Acta Oto-Laryngologica. 112(2). 311–316. 10 indexed citations

11.

Pukander, J., et al.. (1991). Occurrence of Tracheal Carcinoma in Finland. Acta Oto-Laryngologica. 111(6). 1162–1169. 32 indexed citations

12.

Pukander, J., et al.. (1990). Radical surgery for lingual cancer. Clinical Otolaryngology. 15(3). 229–234. 6 indexed citations

13.

Rahko, T. & P. Karma. (1990). Low- and high-frequency hearing in patients with Meni�re's disease. European Archives of Oto-Rhino-Laryngology. 247(5). 329–32. 2 indexed citations

14.

Karma, P., Markku Sipilä, & T. Rahko. (1989). Hearing and Hearing Loss in 5-Year-Old Children:Pure-tone Thresholds and the Effect of Acute Otitis Media. Scandinavian Audiology. 18(4). 199–203. 9 indexed citations

15.

Vilkman, Erkki & P. Karma. (1989). Vertical Hyoid Bone Displacement and Fundamental Frequency of Phonation. Acta Oto-Laryngologica. 108(1-2). 142–151. 17 indexed citations

16.

Sipilä, Markku, P. Karma, J. Pukander, Markku Timonen, & Matti Kataja. (1988). The bayesian approach to the evaluation of risk factors in acute and recurrent acute otitis media. Acta Oto-Laryngologica. 106(1-2). 94–101. 82 indexed citations

17.

Rahko, T. & P. Karma. (1988). High Frequency Audiometry in Facial Paralysis. Acta Oto-Laryngologica. 105(sup449). 161–163. 2 indexed citations

18.

Sipilä, Markku, J. Pukander, & P. Karma. (1987). Incidence of Acute Otitis Media up to the Age of 1 1/2 Years in Urban Infants. Acta Oto-Laryngologica. 104(1-2). 138–145. 59 indexed citations

19.

Karma, P., J. Pukander, Markku Sipilä, Timo Vesikari, & P Grönroos. (1987). Middle ear fluid bacteriology of acute otitis media in neonates and very young infants. International Journal of Pediatric Otorhinolaryngology. 14(2-3). 141–150. 13 indexed citations

20.

Laine, Unto K., et al.. (1981). Clinical Applications of and Experiences with a Portable, Unlimited Text-To-Speech Synthesizer. Ear and Hearing. 2(4). 177–179. 3 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.

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