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Table 1 Distribution of articles per study type, topic, number of authors, presence of self-citations, and descriptive statistics of citation metrics

From: Author self-citation in orthodontics is associated with author origin and gender

Study type N %
 RCT 50 10.80
 Prospective observational 195 42.12
 Retrospective observational 117 25.27
 Narrative or systematic review, meta-analysis 49 10.58
 Survey 12 2.59
 Case report 39 8.64
Topic N %
 OHRQOL/esthetics/practice management/socio-demographics 62 13.39
 Biomaterials 33 7.13
 Diagnosis 87 18.79
 Treatment 127 27.43
 Growth 55 11.88
 New technologies 41 8.86
 Periodontics/caries prevention 19 4.10
 Side effects 26 5.62
 Other 13 2.81
Number of authors N %
 1–3 111 23.97
 4–5 167 36.07
 > 5 185 39.96
Self-citation N %
 Yes 274 59.18
 No 189 40.82
Citation metrics Mean (SD) Median (IQR)
 Self-citations 1.67 (6.19) 1 (2)
 Total citations 32.01 (18.01) 30 (13)
 SCR 5.71 (7.97) 3.03 (8.33)
  1. SD standard deviation, IQR interquartile range
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