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Table 3 Summary of the quality assessment for the included studies

From: Weighing as a stand-alone intervention does not reduce excessive gestational weight gain compared to routine antenatal care: a systematic review and meta-analysis of randomised controlled trials

First author, year of publication (reference)

Jefferies et al. 2009 [37]

Brownfoot et al. 2016 [38]

Validity questions

 1. Was the research question clearly stated?

Y

Y

 2. Was the selection of study subjects/patients free from bias?

Y

Y

 3. Were study groups comparable?

Y

Y

 4. Was method of handling withdrawals described?

Y

Y

 5. Was blinding used to prevent introduction of bias?

Y

Y

 6. Were intervention/exposure factor or procedure and any comparison(s) described in detail?

N

Y

 7. Were outcomes clearly defined and the measurements valid and reliable?

Y

Y

 8. Was the statistical analysis appropriate for the study design and type of outcome indicators?

Y

Y

 9. Were conclusions supported by results with biases and limitations taken into consideration?

Y

Y

 10. Is bias due to study’s funding or sponsorship unlikely?

Y

Y

Overall quality

N

P

  1. American Dietetic Association Quality Criteria Checklist for Primary Research, Y yes, N no,
  2. P, positive rating; N neural rating