|
First author
|
Year
|
Selection
|
Comparability
|
Outcomes
| |
|---|
|
Representativeness of the exposed cohort
|
Selection of the unexposed cohort
|
Ascertainment of exposure
|
No interest outcomes at start of the study
|
Comparability of cohorts on the basis of design and analysis
|
Assessment of outcomes
|
Was follow-up sufficient for the outcome
|
Adequacy of follow-up
|
NOS score
|
|---|
|
Agostoni et al. [21]
|
2005
|
*
|
*
|
*
|
*
| | |
*
|
*
|
6
|
|
Park et al. [22]
|
2009
|
*
|
*
|
*
|
*
|
**
| |
*
|
*
|
8
|
|
De La Torre Hernandez et al. [23]
|
2014
|
*
|
*
|
*
|
*
|
**
|
*
|
*
| |
8
|
|
Gao et al. [24]
|
2014
|
*
|
*
|
*
|
*
|
**
|
*
|
*
| |
6
|
|
Kim et al. [26]
|
2017
|
*
|
*
|
*
|
*
| |
*
|
*
| |
6
|
|
Tian et al. [16]
|
2017
|
*
|
*
|
*
|
*
|
*
|
*
|
*
|
*
|
8
|
- Footnote: Each asterisk represents one star in the Newcastle-Ottawa Scale system. The maximum number of stars is 2 for comparability and 1 for each of the other categories, for a total of up to 9 stars. NOS Newcastle-Ottawa scale
