Table 1: Quality assessment of the studies included in the review

Author/ yr. pub

Sampling methods

Outcomes measurements

(objective, self-report

Response Rate mentioned

 

Control of Confounding  factors

Outcomes measurement

Validity and Reliability)

Total percentage

Quality Score

Bidwell al., 2018

Bidwell al., 2017

 

Bidwell al., 2015

 

Deek et al., 2017

Dunbar al., 2016

Hooker al., 2018

Lee al., 2015

 

 

 

Lyons et al., 2015

 

 

Srisuket al., 2016

 

Stampet al., 2016

Velloneet al., 2018

Wu et al., 2017

Probability sampling

Non-probability sampling

Non-probability sampling

Probability sampling

Probability sampling

Probability sampling

Non-probability sampling

 

Non-probability sampling

 

Probability sampling

 

Probability sampling

Probability sampling

Probability sampling

Objective

 

Self-report

 

 

Self-report

 

 

Self-report

 

Objective

 

Self-report

 

Self-report

 

 

 

Self-report

 

 

 

Self-report

 

 

Self-report

 

Self-report

 

Self-report

 

 

 

Yes

 

No

 

 

No

 

 

Yes

 

Yes

 

Yes

 

No

 

 

 

Yes

 

 

 

Yes

 

 

Yes

 

No

 

No

Yes

 

Yes

 

 

Yes

 

 

Yes

 

Yes

 

Yes

 

Yes

 

 

 

Yes

 

 

 

No

 

 

Yes

 

Yes

 

Yes

Yes

 

Yes

 

 

Yes

 

 

Yes

 

Yes

 

Yes

 

Yes

 

 

 

Yes

 

 

 

Yes

 

 

Yes

 

Yes

 

Yes

 

 

 

80%

 

40%

 

 

40%

 

 

80%

 

100%

 

80%

 

40%

 

 

 

60%

 

 

 

60%

 

 

60%

 

60%

 

60%

Good

 

Satisfactory

 

 

Satisfactory

 

 

Good

 

Good

 

Good

 

Satisfactory

 

 

 

Satisfactory

 

 

 

Satisfactory

 

 

Satisfactory

 

Satisfactory

 

Satisfactory