Table 2.
Quality assessment of the cohort studies in meta-analysis.*
| Study | Selection |
Comparability |
Outcome |
Overall Quality Scores | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Representativeness of Exposed | Selection of Non-Exposed | Exposure Assessment | NHL Absent at Start | Controls for Other Pesticides | Controls for Age | Assessment of Outcome | Follow-up Length | Adequacy of Follow-up | ||
| Andreotti et al. [24] | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 8 |
| De Roos (2005) [19] | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 7 |
*
The study quality was assessed according to the Newcastle Ottawa Quality assessment scale for cohort studies [43]. One point was awarded for yes, and zero points were awarded for no, unable to determine, or inadequate.