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Table 2 General characteristics of the included reviews and the corresponding adherence scores

From: Methodological quality of systematic reviews in dentistry including animal studies: a cross-sectional study

Variables

N (%)

Mean

SD

95%CI

H index of 1st author

    

  ≤ 20

156 (83.0%)

55.09

20.49

51.85–58.33

 20–40

20 (10.6%)

49.13

23.12

38.32–59.95

  > 40

12 (6.4%)

49.80

19.71

37.27–62.32

H index of last author

    

  ≤ 20

69 (37.1%)

55.72

20.30

50.85–60.60

 20–40

75 (40.3%)

53.46

21.11

48.60–58.32

  > 40

42 (22.6%)

53.78

20.50

47.39–60.17

Number of authors

    

 1–3

46 (24.2%)

51.77

23.59

44.77–58.78

 4–5

74 (38.9%)

55.68

21.40

50.72–60.64

  ≥ 6

70 (36.8%)

53.24

18.23

48.89–57.59

Continent of primary authors

    

 North America

27 (14.2%)

53.85

18.45

46.55–61.15

 South America

32 (16.8%)

55.43

20.77

47.95–62.92

 Europe

72 (37.9%)

52.94

21.81

47.82–58.07

 Asia

49 (25.8%)

53.87

20.80

47.90–59.85

 Africa

1 (0.5%)

87.50

NA

NA

 Australia

9 (4.7%)

51.28

21.76

34.56–68.01

Country (or region)

    

 Australia

9 (4.7%)

51.28

21.76

34.56–68.01

 Belgium

6 (3.2%)

50.00

16.68

32.50–67.50

 Brazil

30 (15.8%)

53.74

20.12

46.23–61.26

 Canada

1 (0.5%)

84.62

NA

NA

 Chile

1 (0.5%)

92.31

NA

NA

 China

10 (5.3%)

50.65

20.64

35.88–65.41

 Colombia

1 (0.5%)

69.23

NA

NA

 Denmark

2 (1.1%)

62.02

0.68

55.91–68.12

 Egypt

1 (0.5%)

87.50

NA

NA

 Finland

1 (0.5%)

7.69

NA

NA

 France

5 (2.6%)

44.42

27.47

10.31–78.53

 Germany

7 (3.7%)

49.93

27.37

24.61–75.25

 Greece

4 (2.1%)

50.00

28.44

4.75–95.25

 India

7 (3.7%)

46.15

27.01

21.17–71.14

 Iran

5 (2.6%)

33.94

11.64

19.49–48.39

 Italy

10 (5.3%)

54.66

20.66

39.89–69.44

 Japan

1 (0.5%)

50.00

NA

NA

 Lithuania

1 (0.5%)

61.54

NA

NA

 Netherlands

6 (3.2%)

65.06

21.52

42.48–87.65

 Norway

3 (1.6%)

67.79

14.90

30.77–104.81

 Pakistan

1 (0.5%)

38.46

NA

NA

 Poland

1 (0.5%)

56.25

NA

NA

 Portugal

1 (0.5%)

30.77

NA

NA

 Romania

1 (0.5%)

69.23

NA

NA

 Saudi-Arabia

13 (6.8%)

50.41

15.76

40.89–59.93

 Singapore

1 (0.5%)

84.62

NA

NA

 South Korea

1 (0.5%)

56.25

NA

NA

 Spain

13 (6.8%)

46.23

19.17

34.64–57.81

 Sweden

4 (2.1%)

53.61

22.13

18.40–88.82

 Switzerland

6 (3.2%)

60.02

26.29

32.43–87.61

 Taiwan

1 (0.5%)

62.50

NA

NA

 UAE

9 (4.7%)

77.05

5.59

72.76–81.35

 UK

1 (0.5%)

75.00

NA

NA

 USA

26 (13.7%)

52.66

17.74

45.50–59.83

Country (or region)

    

 Developing

81 (42.6%)

54.95

20.99

50.31–59.59

 Developed

109 (57.4%)

53.00

20.74

49.07–56.94

Center

    

 Single-center

31 (16.3%)

52.00

22.76

43.65–60.35

 Multi-center

159 (83.7%)

54.19

20.47

50.99–57.40

Publication year

    

 2010–2015

37 (19.5%)

37.85

22.20

30.45–45.25

 2016–2018

73 (38.4%)

53.28

18.47

48.97–57.59

 2019–2022

80 (42.1%)

61.74

17.83

57.77–65.70

Journal category

    

 Dental journals (ESCI)

11 (5.8%)

42.13

26.37

24.41–59.85

 Dental journals (SCIE)

122 (64.2%)

54.25

20.01

50.66–57.83

 Other dental journals

8(4.2%)

41.75

27.23

18.98–64.51

 Non-dental journals

49 (25.8%)

57.41

19.35

51.85–62.97

Journal category

    

 Dental journals

141 (74.2%)

52.59

21.22

49.06–56.13

 Non-dental journals

49 (25.8%)

57.41

19.35

51.85–62.97

Journal impact factor

    

  ≤ 3

69 (40.8%)

49.65

18.95

45.10–54.20

 3–5

71 (42.0%)

58.60

18.81

54.15–63.05

  > 5

29 (17.2%)

60.69

21.69

52.44–68.94

Topic

    

 Oral surgery + implant dentistry

84 (44.2%)

51.70

20.26

47.30–56.10

 Periodontology + periodontal surgery

42 (22.1%)

51.26

21.87

44.44–58.07

 Conservative dentistry + endodontics

24 (12.6%)

54.95

23.33

45.10–64.80

 Prosthodontics

2 (1.1%)

69.23

0.00

69.23–69.23

 Orthodontics

38 (20.0%)

59.89

18.83

53.70–66.08

Topic

    

 Surgery

126 (66.3%)

51.55

20.73

47.90–55.21

 Non-surgery

64 (33.7%)

58.33

20.41

53.23–63.43

Funding

    

 Funded

53 (27.9%)

53.96

16.91

49.30–58.62

 No funding

70 (36.8%)

60.43

19.50

55.78–65.08

 No information

67 (35.3%)

46.85

22.86

41.27–52.43

Number of citations

    

 0–10

58 (30.5%)

59.91

19.51

54.79–65.04

 11–50

92 (48.4%)

55.61

18.06

51.87–59.35

 51–100

27 (14.2%)

42.02

20.63

33.86–50.18

  > 100

13 (6.8%)

38.65

29.24

20.98–56.31

Number of tools used

    

 No tool

49 (25.8%)

29.78

15.05

25.45–34.10

 1 tool

95 (50.0%)

62.02

16.39

58.68–65.36

  > 1 tool

46 (24.2%)

62.56

12.94

58.72–66.40

  1. ESCI Emerging Sources Citation Index, SCIE Science Citation Index Expanded, NA Not applicable, SD standard deviation