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Quality assessment of selected studies according to NOS
| Studies | Selection | Comparability | Outcome | Total Score | Average Score |
|---|---|---|---|---|---|
| Krishnaveni et al. 2007 | **** | * | *** | 8 stars | 7.4 stars |
| Mukerji et al. 2012 | **** | * | *** | 8 stars | |
| Shreelakshmi et al. 2015 | *** | * | *** | 7 stars | |
| Herath et al. 2017 | **** | * | *** | 8 stars | |
| Gadgil et al. 2017 | *** | * | ** | 6 stars | |
| Aziz et al. 2018 | Quality could not be assessed due to follow-up study design. | ||||
