Table 1.

Study characteristics (n = 13).

S.no	Authors	Sample size	Sampling method	Study design	Response rate	Year	Study area
1	Angamo et al. [22]	82	Convenience sampling	A cross-sectional study	100%	2012	Jimma
2	Bule et al. [23]	130	Purposive sampling	A prospective cross-sectional	100%	2016	Adama
3	Nadew et al. [24]	422	Simple random sampling	An institution based cross-sectional mixed-methods study design	96%	2020	Addis Ababa
4	Adimasu et al. [25]	214	Stratified proportional random sampling	Hospital based cross-sectional study design	100%	2014	Gondar
5	Kefale et al. [26]	280	Stratified and systematic random sampling	A cross-sectional study	76.1%	2017	Addis Ababa
6	Gurmesa et al. [27]	133	Stratified random sampling	Descriptive cross-sectional study design	100%	2016	Nekemte
7	Kasa et al. [28]	120	Convenience sampling	A cross-sectional study design	95%	2019	Kemisse and Ataye
8	Goshime et al. [29]	422	Simple random sampling	A descriptive cross-sectional study	87.9%	2015	Addis Ababa
9	Denekew et al. [30]	251	Stratified and systematic random sampling	A facility based cross-sectional study design	93.22%	2014	Addis Ababa
10	Gidey et al. [31]	345	Stratified random sampling	An institutional-based cross-sectional study	84.8%	2020	Mekele
11	Kassa et al. [32]	67	Purposive sampling	A cross-sectional study	92%	2017	Dessie
12	Hailua et al. [33]	156	Convenience sampling	A prospective cross-sectional study	96.1%	2014	Gondar
13	Shanko et al. [34]	327	Purposive sampling	A hospital-based descriptive cross-sectional study	91.4%	2017	Harar