Table 3 Regression analysis for the association between study characteristics and the adherence scores

H index of 1st author

−0.22

−0.46-0.01

0.06

H index of last author

−0.10

−0.27-0.06

0.22

Number of authors

0.27

−1.44-1.98

0.76

Country

 Developing

Ref.

 Developed

−1.95

−7.98-4.08

0.53

Center

 Single

Ref.

 Multiple

2.19

−5.89-10.27

0.59

Publication year

3.10

2.20–4.00

< 0.01*

1.59

0.84–2.33

< 0.01*

Journal category

 Dental journals

Ref.

 Non-dental journals

4.82

−1.97-11.61

0.16

Impact factor

3.14

1.14–5.14

< 0.01*

2.96

1.57–4.34

< 0.01*

Topic

 Surgery

Ref.

Ref.

 Non-surgery

6.78

0.53–13.02

0.03*

4.75

0.31–9.18

0.04*

Funding

 Funded

Ref.

 No funding

6.47

−0.75–13.69

0.08

 No information

−7.11

−14.40-0.18

0.06

Citations

−0.12

− 0.16--0.07

< 0.01*

Number of tools used

 No tool

Ref.

Ref.

 1 tool

32.24

26.94–37.54

< 0.01*

25.59

20.31–30.88

< 0.01*

  > 1 tool

32.78

26.60–38.97

< 0.01*

26.65

20.43–32.86

< 0.01*