Table 1. JBI checklist for bias assessment.

Author/year	Was the sample frame appropriate to address the target population?	Were study participants sampled in an appropriate way?	Was the sample size adequate?	Were the study subjects and the setting described in detail?	Was the data analysis conducted with sufficient coverage of the identified sample?	Were valid methods used for the identification of the condition?	Was the condition measured in a standard, reliable way for all participants?	Was there appropriate statistical analysis?	Was the response rate adequate, and if not, was the low response rate managed appropriately?
Sharma B 16 et al. 2019	yes	yes	No	Yes	Yes	yes	yes	yes	yes
Gyawali B 17 et al. 2018	yes	yes	Yes	Yes	Yes	yes	yes	yes	yes
Sharma SK 18 et al. 2011	yes	yes	Yes	Yes	Yes	yes	yes	yes	yes
Sharma SK 19 et al. 2013	yes	yes	Yes	Yes	yes	yes	yes	yes	yes
Chhetri MR 20 et al. 2009	yes	yes	Yes	Yes	yes	yes	yes	yes	yes
Paudyal G 21 et al. 2008	yes	yes	Yes	Yes	yes	yes	yes	yes	yes
Bhandari GP 22 et al. 2014	yes	yes	Yes	Yes	yes	yes	yes	no	yes
Karki P 23 et al. 2000	yes	yes	Yes	Yes	yes	yes	yes	no	yes
Paudel S 24 et al. 2020	yes	yes	Yes	Yes	yes	yes	yes	yes	yes
Koirala S 25 et al. 2018	yes	yes	yes	Yes	yes	yes	yes	yes	yes
Ranabhat K 26 et al. 2016	no	yes	no	Yes	yes	yes	yes	yes	yes
Mehta KD 27 et al. 2011	yes	yes	yes	Yes	yes	yes	yes	yes	yes
Shrestha UK 28 et al. 2006	yes	yes	yes	Yes	yes	yes	yes	yes	yes
Dhimal M 29 et al. 2019	yes	no	yes	Yes	yes	yes	yes	yes	yes
Kushwaha A 30 et al. 2020	no	yes	no	Yes	yes	yes	yes	yes	yes