Quality Assessment Questions

Code	Questions	Answer (Score)
QC1.	Were the aims and objective clearly repoted?	1 - Aims, objectives and rationale are clearly reported 0.5 - Aims and objectives are reported, rationalre is missing 0 - Aims, objective and rationale missing
QC2.	Has the context been described?	1 - The context of a study is described 0 - Not described
QC3.	Was the article refereed?	1 - Yes 0.5 - Lightly referred 0 - No
QC4.	Was the research design suitable to address the goals fo the research?	1 - Yes 0 - No
QC5.	Were possible cofounders sufficiently controlled for the analysis?	1 - Yes, completely 0.5 - Partially 0 - No
QC6.	Were Threats to validity adequately discusses?	1 - The article discusses about the threat to validity 0.5 - Some threats are discussed, but not all 0 - The article is missing threats to validity
QC7.	Were the variables of the measurement defined?	1 - The variables are described 0 - One or more variables are not defined
QC8.	Were data collection method described?	1 - The data collection method has been described 0.5 - Either the source or the method is not described 0 - Neither the source nor the method is described
QC9.	Was the data collection carried out properly?	1 - Yes 0 - No
QC10.	Was there a sufficient description of the data analysis and interpretation methods?	1 - Yes 0 - No
QC11.	Were data analysis methods appropriate given research questions and available data?	1 - Yes 0 - No
QC12.	Were the conclusions valid based on the analysis provided?	1 - Yes 0.5 - Partially 0 - No