The top 100 most cited articles in anaphylaxis: a bibliometric analysis

Journals and their impact factor are listed in Table 2.

Table 2 List of journals from the top 100 articles

The top 100 articles were published in 34 different journals. The Journal of Allergy and Clinical Immunology published the most (n = 41), followed by Allergy (n = 9) and Clinical and Experimental Allergy (n = 5). 77% articles of top 100 were published in 11 journals. We determined that the IF of these 34 journals was from 1.131 to 91.253 (according to Clarivate Analytics 2020). There was no correlation between IF and number of publications (p > 0.05).

Figure 3 shows the dynamic changes of articles published in major journals. Since the middle 1990s, the publications of The Journal of Allergy and Clinical Immunology began to increase rapidly compared with other journals.

Fig. 3figure 3

Dynamic changes in the number of articles in major journals

Correlation analysis between citations, ACY, IF, and publication time

The correlation analysis for the total number of citations, ACY, IF, and length of time since publication in the top 100 list revealed a positive correlation between total number of citations and ACY (r = 0.670, p < 0.01), and between total number of citations and IF (r = 0.219, p < 0.05), whereas a negative correlation was observed between ACY and length of time since publication (r = -0.697, p < 0.01). There was no correlation between total number of citations and length of time since publication or between ACY and IF or between length of time since publication and IF (Fig. 4).

Fig. 4figure 4

Correlation analysis between citations, ACY, IF, and publication time

Countries collaboration, affiliations, and authors

The data extracted from web of science indicated that the corresponding authors of the top 100 articles were from 13 different countries (Fig. 5). Most of the top 100 cited articles were from the USA (n = 46), followed by Canada (n = 10), Australia (n = 8), and France (n = 8).

Fig. 5figure 5

Corresponding author’s country

Figure 6 shows the country collaboration map worldwide generated by the Biblioshiny.

Fig. 6figure 6

Country collaboration map

There were 219 pairs of collaborating countries worldwide, of which the top 3 were the USA and Canada with 13 collaborations, followed by the USA and Germany with 10 collaborations, as well as the USA with UK with 10 collaborations. Collaboration Network according to the Biblioshiny is shown in Fig. 7. We observed that the collaboration network had two clusters, one was the continental European countries, and the other mainly included the USA, Canada, Australia, and UK.

Fig. 7figure 7

As to the most relevant affiliations according to Biblioshiny, University of Manitoba published the most articles (n = 21), followed by Harvard University, University of Cincinnati (n = 13), and University of Florida (n = 10) (Table 3).

Table 3 List of the top10 affiliations in the number of articles

The top 10 most prolific authors demonstrated by Biblioshiny was that Simons FER from University of Manitoba produced the most top-cited articles in anaphylaxis(n = 14), followed by Sampson HA(n = 8), Sheikh A(n = 7), Lieberman P(n = 6), Worm M(n = 6), Thong BY (n = 5), Ardusso LRF(n = 4), Kemp SF(n = 4), Laxenaire MC(n = 4), Lockey RF(n = 4).

Figure 8 shows the details of the top 10 authors and their productions over time. The larger the circle, the more articles published. The deeper the color, the more citations.

Fig. 8figure 8

Top-autors’ production over the time

The analysis of co-occurrence network

Apart from searching term “anaphylaxis,” authors keywords and keywords plus extracted from the top 100 articles were analyzed by VOSviewer (Fig. 9). According to Fig. 9A, different colors represent different clusters and the size of the ball reflects the frequency of keywords. It was observed that the research focus was classified into three clusters, marked with red, blue, and green, respectively. In addition, the color of keywords corresponds to the average publication year as shown in Fig. 9B. The recent keywords after 2005 mainly included “drug allergy,” “adrenaline,” “prevalence,” “diagnosis,” and “management.”

Fig. 9figure 9Recent articles

No articles published after 2017 were observed in the top 100 list. In order to better show the recent research hotspots, we retrieved the top 10 most cited articles published from 2018 to 2021 (Table 4). The total citations of the top 10 articles were from 58 to 151, and ACY of them were between 14.5 and 102. Nine of the top 10 most cited articles were original articles, and one was review. The correlation analysis for the total number of citations, ACY, IF, and length of time since publication in the top 10 list revealed a negative correlation between ACY and length of time since publication (r = − 0.782, p < 0.01). However, there was no correlation between the other parameters, which was different from the results of top 100. The research hotspots of the top 10 articles were COVID-19 vaccine (n = 3), pathogenesis (n = 3), perioperative anaphylaxis (n = 1), diagnosis (n = 1), and others (n = 2).

Table 4 List of the top 10 most cited articles in anaphylaxis(2018-2021)

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