Main information about the collection
Then, we add some metadata to the pubmed collection, and we use the biblioAnalysis and summary functions to perform a descriptive analysis of the data frame:
M <- convert2df(D, dbsource = "pubmed", format = "api")
results <- biblioAnalysis(M)
summary(results)
# Main Information about data
# 
#  Documents                             2918 
#  Sources (Journals, Books, etc.)       1275 
#  Keywords Plus (ID)                    2245 
#  Author's Keywords (DE)                4212 
#  Period                                2000 - 2020 
#  Average citations per documents       0 
# 
#  Authors                               8854 
#  Author Appearances                    12928 
#  Authors of single-authored documents  229 
#  Authors of multi-authored documents   8625 
#  Single-authored documents             307 
# 
#  Documents per Author                  0.33 
#  Authors per Document                  3.03 
#  Co-Authors per Documents              4.43 
#  Collaboration Index                   3.31 
#  
#  Document types                     
#  BIOGRAPHY                         4 
#  CASE REPORTS                      2 
#  COMMENT                           8 
#  COMPARATIVE STUDY                 97 
#  EDITORIAL                         2 
#  ENGLISH ABSTRACT                  1 
#  EVALUATION STUDY                  19 
#  HISTORICAL ARTICLE                82 
#  INTRODUCTORY JOURNAL ARTICLE      2 
#  JOURNAL ARTICLE                   2694 
#  LETTER                            3 
#  REVIEW                            4 
#  
# 
# Annual Scientific Production
# 
#  Year    Articles
#     2000       10
#     2001        8
#     2002       10
#     2003       16
#     2004       18
#     2005       27
#     2006       37
#     2007       24
#     2008       43
#     2009       58
#     2010       73
#     2011       93
#     2012      121
#     2013      158
#     2014      172
#     2015      225
#     2016      254
#     2017      276
#     2018      380
#     2019      544
#     2020      159
# 
# Annual Percentage Growth Rate 14.83383 
# 
# 
# Most Productive Authors
# 
#    Authors        Articles Authors        Articles Fractionalized
# 1      SWEILEH WM       62     SWEILEH WM                   25.40
# 2      ZYOUD SH         59     ZYOUD SH                     18.74
# 3      AL-JABI SW       48     HO YS                        13.89
# 4      HO YS            34     AL-JABI SW                   13.00
# 5      YOON DY          27     HUH S                         9.33
# 6      SAWALHA AF       26     BORNMANN L                    9.29
# 7      WANG Y           26     SMITH DR                      9.00
# 8      ZHANG Y          24     ÅŽENEL E                      7.70
# 9      BORNMANN L       22     YEUNG AWK                     6.22
# 10     KHOSA F          22     SHAMIM T                      6.00
# 
# 
# Top manuscripts per citations
# 
#                                        Paper          TC TCperYear
# 1  DU L, 2019, FRONT PSYCHOL                           0         0
# 2  DUAN L, 2020, FRONT PSYCHIATRY                      0         0
# 3  YANG C, 2020, CLIN NEUROL NEUROSURG                 0         0
# 4  FERHATOGLU SY, 2020, TRANSPLANT. PROC.              0         0
# 5  CHEN L, 2020, PHYTOMEDICINE                         0         0
# 6  KUNZE KN, 2020, AM J SPORTS MED                     0         0
# 7  CUOCOLO R, 2020, INSIGHTS IMAGING                   0         0
# 8  WU M, 2020, J. MATERN. FETAL. NEONATAL. MED.        0         0
# 9  LEE IS, 2020, J PAIN RES                            0         0
# 10 SANT'ANNA FH, 2020, INT. J. SYST. EVOL. MICROBIOL.  0         0
# 
# 
# Corresponding Author's Countries
# 
#   Country Articles Freq  SCP MCP MCP_Ratio
# 1      NA     2918    1 2918   0         0
# 
# 
# SCP: Single Country Publications
# 
# MCP: Multiple Country Publications
# 
# 
# Total Citations per Country
# 
#   Country      Total Citations Average Article Citations
# 1           NA               0                         0
# 
# 
# Most Relevant Sources
# 
#                                                       Sources        Articles
# 1  PLOS ONE                                                               106
# 2  SCIENTOMETRICS                                                          67
# 3  WORLD NEUROSURGERY                                                      55
# 4  ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL              36
# 5  INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH       34
# 6  MEDICINE                                                                31
# 7  NEURAL REGENERATION RESEARCH                                            29
# 8  BMJ OPEN                                                                26
# 9  JOURNAL OF THE MEDICAL LIBRARY ASSOCIATION : JMLA                       26
# 10 PEERJ                                                                   25
# 
# 
# Most Relevant Keywords
# 
#    Author Keywords (DE)      Articles Keywords-Plus (ID)     Articles
# 1      BIBLIOMETRICS              667  BIBLIOMETRICS             1545
# 2      BIBLIOMETRIC ANALYSIS      331  HUMANS                    1518
# 3      BIBLIOMETRIC               172  PERIODICALS AS TOPIC       592
# 4      CITATION ANALYSIS          123  BIOMEDICAL RESEARCH        483
# 5      H INDEX                     97  PUBLISHING                 419
# 6      PUBLICATIONS                84  JOURNAL IMPACT FACTOR      323
# 7      CITATIONS                   81  PUBLICATIONS               252
# 8      CITATION                    69  RESEARCH                   252
# 9      WEB OF SCIENCE              66  UNITED STATES              219
# 10     SCIENTOMETRICS              64  FEMALE                     174```