Table 2. Study quality appraisal criteria and number of studies meeting each criterion * .
|
Criterion
|
Inoue 2008 [34] | Matthews 2012 [11] | van der Ploeg 2012 [10] | Koster 2012 [30] | Pavey 2012 [32] | Chau 2013 [33] | n | |
|---|---|---|---|---|---|---|---|---|
| 1. | Objectives: Are the objectives or hypotheses of the research described in the paper stated? | 1 | 1 | 1 | 1 | 1 | 1 | 6/6 |
| 2. | Study design: Is the study design presented? | 1 | 1 | 1 | 1 | 1 | 1 | 6/6 |
| 3a. | Target population: Do the authors describe the target population they wanted to research? | 1 | 0 | 1 | 1 | 1 | 0 | 4/6 |
| 3b. | Sample: Was a random sample of the target population taken? AND was the response rate 60 percent or more? | 0 | 0 | 0 | 0 | 0 | 0 | 0/6 |
| 3c. | Sample: Is participant selection described? | 1 | 1 | 1 | 1 | 1 | 1 | 6/6 |
| 3d. Sample: Is participant recruitment described, or referred to? | 1 | 1 | 1 | 1 | 1 | 1 | 6/6 | |
| 3e. | Sample: Are the inclusion and/or exclusion criteria stated? | 1 | 1 | 1 | 1 | 0 | 1 | 5/6 |
| 3f. | Sample: Is the study sample described? (minimum description = sample size, gender, age and an indicator of socio-economic status) | 1 | 1 | 1 | 1 | 1 | 1 | 6/6 |
| 3g. | Sample: Are the numbers of participants at each stage of the study reported? (Authors should report at least numbers eligible, numbers recruited, numbers with data at baseline and numbers lost to follow up) | 1 | 1 | 0 | 0 | 1 | 0 | 3/6 |
| 4. | Variables: Are the measures of total sitting and mortality described? | 1 | 1 | 1 | 1 | 1 | 1 | 6/6 |
| 5a. | Data sources & collection: Do authors describe the source of their data? (e.g., cancer registry, health survey) AND did authors describe how the data were collected? (e.g., by mail) | 1 | 1 | 1 | 1 | 1 | 1 | 6/6 |
| 5b. | Measurement: Was reliability of the measure(s) of total sitting mentioned or referred to? | 0 | 0 | 1 | 0 | 1 | 1 | 3/6 |
| 5c. | Measurement: Was the validity of the measure(s) of total sitting mentioned or referred to? | 1 | 1 | 1 | 0 | 1 | 1 | 5/6 |
| 6a. | Statistical methods: Were appropriate statistical methods used and described, including those for addressing confounders? | 1 | 1 | 1 | 1 | 1 | 1 | 6/6 |
| 6b. | Statistical methods: Were the numbers/ percentages of participants with missing data for sitting and the health outcome indicated AND If more than 20 percent of data in the primary analyses were missing, were methods used to address missing data? | 0 | 1 | 0 | 0 | 1 | 0 | 2/6 |
| Score | 12 | 12 | 12 | 10 | 13 | 11 | ||
*
0= ‘no’; 1= ‘yes’