Table 1.

Characteristics of studies included in the review

Authors	Publication year	Study period	Study region	Study setting	Study design	No. of death	Sample size
Gebre-Mariam [28]	2009	2006–2007	Addis Ababa	Health Center	Retrospective Cohort	31	248
Sime et al. [32]	2022	2014–2016	Dire Dawa	Hospitals	Retrospective Cohort	76	566
Teklu et al. [31]	2017	2005–2015	Addis Ababa	Hospitals	Retrospective Cohort	55	355
Seyoum et al. [13]	2022	2011–2018	Addis Ababa	Hospital & Health center	Retrospective Cohort	50	1123
Teshome Kefale & Anagaw, [26]	2017	2012–2015	Southern Ethiopia	Hospitals	Cross sectional	39	188
Misgina et al. [34]	2019	2010–2016	Tigray	Hospital	Retrospective Cohort	37	295
Sileshi et al. [30])	2013	2009–2012	Amhara	Hospital & Health center	Retrospective Cohort	93	422
Gesesew et al. [18]	2016	2010–2012	Oromia	Hospital	Retrospective Cohort	55	272
Habtegiorgis et al. [19]	2018	2012–2016	Dire Dawa	Hospital & Health center	Retrospective Cohort	79	471
Birhan et al. [15]	2021	2014–2019	Amhara	Hospital	Retrospective Cohort	87	243
Refera & Wencheko, [37]	2013	2006–2011	Oromia	Hospital	Retrospective Cohort	79	502
Lelisho et al. 2022) [36]	2022	2014–2022	Oromia	hospital	Retrospective Cohort	84	402
Wondimu et al. [35]	2019	2007–2017	Southern Ethiopia	hospital	Retrospective Cohort	83	364
Belayneh et al. [14]	2015	2009–2011	Tigray	hospital	Cross sectional	88	342
Weldegebreal et al. [39]	2018	2008–2014	Harari	Hospital	Retrospective Cohort	54	627
Tola et al. [38]	2019	2012–2017	Harari	hospital	Retrospective Cohort	27	349
Shaweno & Worku, [29]	2012	2006–2010	Southern Ethiopia	Health Center	Retrospective Cohort	50	370
Fiseha et al. [27]	2015	2010–2013	Southern Ethiopia	hospital	Cross sectional	22	397
Abrha et al. [17]	2015	2010–2012	Oromia	Hospital	Retrospective Cohort	55	272
Gezae et al. [33]	2020	2015–2018	Tigray	Hospital	Retrospective Cohort	70	305