Oye-Adeniran/2006 [22]
|
Cross-sectional study
|
Anambra, Oyo, Kaduna & Bauchi
|
22.1%
|
Client and Health service related
|
Okanlawon/2010 [23]
|
Cross-sectional
|
Ogun
|
31.6%
|
Client and Health service related
|
Nwachukwu/2008 [15]
|
Cross sectional
|
Imo
|
29.7%
|
Client related and Health service related
|
Umoh/2011 [29]
|
Cross-sectional
|
Akwa-Ibom
|
52.6%
|
Client related
|
Idris/2013 [21]
|
Crosss-sectional
|
Kaduna
|
14%
|
Client related
|
Asekun-Olarinmoye/2013 [24]
|
Cross-sectional study
|
Osun
|
13.1%
|
Client related
|
Eluwa/2016 [20]
|
Cross-sectional
|
Anambra, Abia, Delta, Ebonyi, Edo, Enugu
|
41%
|
Client related
|
Ugboaja/2011 [31]
|
Cross-sectional
|
Anambra
|
44%
|
Client related
|
Egede/2015 [13]
|
Cross-sectional
|
Ebonyi
|
28.3%
|
Client related
|
Adebayo/2016 [35]
|
Cross-sectional
|
Ondo
|
66.8%
|
Client related
|
Durowade/2017 [17]
|
Cross-sectional
|
Ekiti
|
50.5%
|
Client related
|
Solanke/2017 [37]
|
Cross-sectional study (secondary data analysis)
|
Nigeria
|
19.8%
|
Client related
|
Etokidem/2017 [30]
|
Cross-sectional
|
Cross-River
|
17.2%
|
Client related
|
Okigbo/2014 [16]
|
Cross sectional
|
Cross River
|
25.9% (among ART clients), 15.8%(among HCT clients)
|
Client Related
|
Adebowale 2011 [36]
|
Cross sectional (Secondary data analysis)
|
Nigeria
|
26%
|
Client Related
|
Schwandt/2017 [14]
|
Cross-sectional
|
Abuja, Benin, Ibadan, Ilorin, Kaduna, Zaria
|
NA
|
Health service related
|
Akamike/ 2019 [32]
|
Quasi-experimental
|
Ebonyi
|
9.9% in intervention arm, 12.8% in control arm
|
Client and Health Service related
|
Abiodun /2015 [33]
|
Cross sectional
|
Ogun
|
54.1% (EC)
|
Client related
|
Adefalu/2019 [27]
|
Qualitative
|
Kebbi and Sokoto
|
NA
|
Client and Health service related
|
Adeyemi/2016 [34]
|
Cross sectional
|
Oyo
|
25.4%
|
Client related
|
Bishwajit/2018 [38]
|
Secondary data Analysis
|
Nigeria
|
16%
|
Client Related
|
Chimah/ 2016 [18]
|
Cross sectional
|
Lagos
|
31.1%
|
Client related
|
Johnson 2/017[39]
|
Secondary data analysis
|
Nigeria
|
10.3%
|
Client related
|
Omo-Aghoja/2009 [19]
|
Cross sectional
|
Delta
|
29%
|
Client related
|
Sinai /2019 [28]
|
Qualitative
|
Kaduna
|
NA
|
Client and health service related
|
Ankomah /2013 [40]
|
Qualitative
|
13 States in Nigeria
|
NA
|
Client and Health worker related
|
Aransiola /2014 [41]
|
Qualitative
|
Ibadan and Kaduna
|
NA
|
Client related
|