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Table 3 Univariable and multivariable estimates with corresponding 95% confidence intervals and p-values for the association among the AMSTAR-2 score and systematic review characteristics

From: Methodological assessment of systematic reviews of in-vitro dental studies

Variable

 

Univariable

Multivariable

Coeff. (95% CIs)

p- value

Coeff. (95% CIs)

p- value

Dental specialty a

Orthodontics

reference

-

reference

-

Periodontology

3.05 (10.22,16.32)

0.65

2.04 (-9.79,13.86)

0.73

Restorative

3.80 (-6.08,13.69)

0.45

-0.82 -9.79,8.14)

0.86

Endodontics

12.82(2.74,22.90)

0.01`

8.97 (-0.15,18.08)

0.05

Prosthodontics

1.68 (-7.96,11.31)

0.73

-1.48 (-10.12,7.17)

0.74

Continent

Americas

Reference

   

Asia & Other

-0.33 (-7.27,6.61)

0.93

  

Europe

-2.59 (-9.27,4.09)

0.45

  

Number of authors

Per unit

1.87 (0.26,3.47)

0.02

0.48(-1.01, 1.98)

0.53

Year

Per unit

2.64(1.90, 3.38)

 < 0.01

2.60(1.84, 3.35)

 < 0.001

Impact factor

Per unit

2.03(-0.84, 4.89)

0.16

  
  1. CI confidence interval aLikelihood ratio test p = 0.01