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Table 2 Risk of Bias of the included studies

From: Relationship between sublingual varices and hypertension: a systematic review and meta-analysis

 

Q1

Q2

Q3

Q4

Q5

Q6

Q7

Q8

Q9

Final score

Jafari et al.

Y

Y

Y

Y

Y

Y

N

Y

Y

7/8

Accardo et al.

Y

Y

Y

Y

Y

Y

Y

Y

Y

8/8

Akkaya et al.

Y

Y

Y

Y

Y

Y

Y

Y

Y

8/8

González-Álvarez et al.

Y

Y

Y

Y

Y

Y

Y

Y

Y

8/8

Bergh et al.

N

Y

Y

Y

Y

Y

Y

Y

Y

7/8

Hedström et al.

Y

Y

Y

Y

Y

Y

Y

Y

Y

8/8

İçöz et al.

Y

Y

Y

Y

Y

Y

Y

Y

Y

8/8

Jamali et al.

Y

Y

Y

Y

Y

Y

Y

Y

Y

8/8

Lazos et al.

Y

Y

Y

Y

Y

Y

Y

Y

Y

8/8

Baharvand et al.

Y

Y

Y

Y

Y

Y

Y

Y

Y

8/8

Olufemi et al.

Y

Y

Y

Y

Y

Y

N

Y

Y

7/8

Shivakumar et al.

Y

Y

Y

Y

Y

Y

Y

Y

Y

8/8

  1. Y: Yes, N: NO, Q1: Were the criteria for inclusion in the sample clearly defined? Q2: Were the criteria for inclusion in the sample clearly defined? Q3: Were the study subjects and the setting described in detail? Q4: Was the exposure measured in a valid and reliable way? Q5: Were objective, standard criteria used for measurement of the condition?Q6: Were confounding factors identified? Q7: Were strategies to deal with confounding factors stated? Q8: Were the outcomes measured in a valid and reliable way? Q9: Was appropriate statistical analysis used?