Table 1 Study characteristics

Yagub, A. I.

[28]

Sudan, 2015/ LI

Mix method

Documentation/ observation, recordings and open interviews

*****

Providing health services for vulnerable people

Albis, M. L. F.

[29]

Bangladesh, 2019/ LMI

Survey

Questionnaire

****

Providing primary health services to poor urban communities

Amirkhanian, Y. A.

[30]

Central and Eastern Europe, 2004

Qualitative study

In-depth interviews

*****

Providing prevention, education and other services for people with AIDS

Bechange, S.

[31]

Uganda, 2010/ LI

Mixed methods

Document review and analysis, observation, in-depth interviews, a structured questionnaire, and conceptual events

*****

Providing HIV / AIDS health services to people vulnerable to HIV / AIDS

Ejaz, I.

[32]

Pakistan, 2011/ LMI

Qualitative study

Document review and in-depth interviews

*****

Providing health education, health promotion and health services to the community

Mercer, M. A.

[33]

Timor-Leste, 2014/ LMI

Qualitative study

In-depth explanation

**

Providing health services to a traumatised population

Wamai, R. G

[34]

Kenya and Ethiopia, 2008/ LMI, LI

Qualitative study

In-depth explanation

***

NGOs provide public and health services (treatment, prevention and rehabilitation), HIV/AIDS and reproductive health services to urban areas

Mercer, A

[35]

Bangladesh, 2004/ LMI

Review

Review of report

***

Providing clinical education, vaccination, reproductive health and child health services to the poorest people

Mercer, A

[36]

Bangladesh, 2006/ LMI

Survey

Structured interviews

****

Providing reproductive health services in rural areas among the poor and needy in 12 areas

De Maio, G.

[37]

Italy, 2014/ HI

Descriptive study

Routine program data.

****

Providing inpatient and outpatient services to the homeless

De Souza, R.

[38]

India, 2009/ LMI

Qualitative study

Analyse documents, in-depth interviews

*****

Organising sex workers in the slums of Bangalore, India, for HIV/AIDS prevention

Dhingra, R.

[39]

India, 2001/ LMI

Qualitative study

N/A

**

Financing the provision of preventive and curative services through community-based health insurance programs for the Indian population

Franco, M. M. R.

[40]

Mexico, 2019/ UMI

Quantitative retrospective analysis

Records

*****

Providing pharmaceutical and chemical subsidies to hematopoietic cell transplant patients

Gellert G. A

[41]

1996

Qualitative study

Review of report

**

Providing medical services and prevention of tobacco-related diseases, infectious and epidemic diseases, maternal mortality and women’s health for the poorest people

Ghosh, S. C.

[42]

Bangladesh, 2011/ LMI

Mix method

Pre-tested questionnaire and focus group discussions

*****

Establishing toilets in rural areas to improve their health.

Gilson, L.

[43]

Ghana India Malawi Mexico Nepal Pakistan PNG South Africa Tanzania Uganda, 1994/ LMI, LI, UMI,

Narrative review

N/A

N/A

Providing health service, facilities and community participation

Gomez-Jauregui, J.

[44]

Mexico, 2004/ UMI

Qualitative study

In-depth interview

*****

Providing reproductive health services for rural area

Heard, A

[45]

India, 2011/ LMI

Mix method

Questionnaires/ interview and focus group discussion

*****

Providing essential health services in remote areas.

Holland, C. E.

[46]

Cameroon, 2015/ LMI

Cross-sectional survey

Structurer questioner

*****

Providing AIDS/HIV services to NGOs for men who have sex with men (MSM)

Khan, J. A.

[47]

Bangladesh, 2017/ LMI

Survey

Self-reported

*****

Providing services to mothers, infants and children, prevention and health care

Khodayari-Zarnaq, R.

[48]

Iran, 2019/ UMI

Qualitative study

Semi-structured, in-depth qualitative interviews

*****

Establishing and equipping hospitals, supplying medicine and treatment to the poor, financial support for orphans, providing loans to the poor, awareness, training vulnerable groups

Maclure, R.

[49]

Burkina Faso, 1995/ LI

Case study

Interview

***

Two NGOs providing first-aid clinics, maternities, and midwife lodgings for providing services for maternal health and child survival

Manna, A.

[50]

India, 2019/ LMI

Qualitative study

Interview

**

Using cell phones to communicate with cancer patients

Mehta, P.

[51]

India, 2013/ LMI

Cross-sectional

Questionnaire

***

Providing medical services for children with cancers

Momoh, G. T.

[52]

Nigeria, 2015/ LMI

Quasi experimental

Semi-structured questionnaire/ in-depth interview

*****

Strengthen the capacity of 12 NGOs in the field of support and policy related to the emphasis on reproductive health issues

Mugisha F

[53]

Uganda, 2005/ LI

Qualitative study

Semi-structured individual interviews

*****

Providing reproductive health services

Mukherjee S

[54]

India, 2017/ LMI

Descriptive study

Case Studies, semi-structured interviews and unstructured observation/ literature review

*****

Providing community participation

Nguyen, N.

[55]

Low- and middle-income countries, 2014

Online survey

Questionnaire

*****

Providing clinical services to cardiovascular programs

Perry, H.

[56]

28 countries such as Bangladesh

Bolivia

Burkina Faso

Burundi

Cambodia, 2015/ LI, LMI, UMI, HI and Fragile

Qualitative study

N/A

**

Providing maternal, neonatal, and child health services

Perry, H.

[57]

28 countries such as

Bangladesh

Bolivia

Burkina Faso

Burundi

Cambodia, 2015/ LI, LMI, UMI, HI and Fragile

Qualitative study

Review of project Evaluations, presentations at global health conferences, and peer-reviewed publications

***

Providing maternal, neonatal, and child health services

Piotrowicz M

[58]

Poland, 2013/ HI

Qualitative study

N/A

*****

Ricca, J.

[59]

Sub-Saharan Africa, South and Southeast Asia and the Caribbean, 2014

Mix method

Structure interview and questioner

*****

NGO projects implementing community-based intervention packages to child mortality

Ui, S.

[60]

Cambodia, 2010/ UMI

Descriptive quantitative study

Self-administered questionnaire forms

****

Community participation at health centres in rural

Wu, F. S.

[61]

China, 2005/ UMI

Commentary

N/A

N/A

Providing HIV/AIDS prevention

Abdelmoneium, A. O. A.

[62]

Sudan, 2010/ LI

Qualitative study

In-depth explanation

*****

Providing for separate provision of services to adolescent mothers

Ahmed, N.

[63]

Sudan, 2019/ LI

Qualitative study

In-depth explanation

*****

Providing free vaccinations to children

Kelly, Jeffrey A.

[64]

Africa, Central/Eastern Europe and Central Asia, Latin America and the Caribbean, 2006

Qualitative study

In-depth interviews

*****

African NGOs most likely to use peer education and community awareness events; Eastern European NGOs most likely to offer needle exchange; Latin American NGOs to have resource centres and offer risk reduction programmes; and Caribbean organisations to use mass education approaches

Mercer, M. A.

[65]

Uganda, India, Brazil, Swaziland, Thailand, Zambia and Kenya, 1991/ LI, LMI, HI

Qualitative study

In-depth explanation

***

Providing educational materials to specific groups, peer education, experimental drugs, counselling and healthcare to people with AIDS

Ambrosini, M.

[66]

Italy, 2015/ HI

Case studies

Observation, analysing documents and interviewing

*****

Providing free health care to irregular immigrants

Ament, J. D.

[67]

Bolivia, 2014/ LMI

Cross-sectional

Questionnaires/ Interview

*****

Support for spinal procedures

Andrade, M.

[68]

Brazil, 2018/ UMI

Non-randomised trial

N/A

*****

Providing diagnostic mammography and biopsies as well as anatomo-histopathological and immunohistochemical analysis

Bader, F.

[69]

Jordan, 2009/ UMI

Survey

Interviews

*****

Providing mental health services for displaced Iraqis

Baig, M. B.

[70]

India, 2014/ LMI

mixed method

Semi-structured questionnaire/ Interview

*****

Providing primary health centres services

Baqui, A. H.

[71]

India, 2008/ LMI

Quasi-experimental study

Questionnaire

*****

Providing maternal and newborn health services

Barzin, Y.

[72]

Vietnam, 2012/ LMI

Qualitative study

Interview

*****

Providing health services

Cancedda, C.

[73]

Sierra Leone, 2016/ Fragile

Qualitative study

Peer-reviewed publications and after-action reports

****

Provide 17 health facilities in 4 regions and establish two laboratories and employ 800 community health workers to fight Ebola virus disease

Chanani, S.

[74]

India, 2019/ LMI

Cross-sectional

Android smartphones and the CommCare mobile application

*****

Providing prevention and treatment services, groups received growth monitoring, referrals to public health facilities, and home-based counselling

Devadasan, N.

[75]

India, 2012/ LMI

Cross-sectional survey

interview

*****

Insuring poor people through NGOs

Edward, A.

[76]

Afghanistan, 2015/ Fragile

mixed-method

Key informant interviews, focus group discussions / Structured interviews

*****

NGOs provide comprehensive training for community health workers

Ferguson, J. L.

[77]

Australia, 2018 / HI

Qualitative study

N/A

***

Providing facilitating diversion from hospitalisation (step-up) and providing residential support services following discharge from the hospital (step down).

Fiorini, G.

[78]

Italy, 2016/ HI

Cross-sectional

Anatomical therapeutic chemical

*****

Drug dispensation by a non–governmental organisation providing free medical assistance to undocumented migrants in Milan

Gilbert, H.

[79].

Mozambique and Kenya, 2011/ LI And LMI

Qualitative study

N/A

***

Providing HIV/AIDS awareness, HIV/AIDS prevention, access to HIV healthcare services and the provision of treatment

Heinmüller, R.

[80]

Mali, 2012/ LI

Time series

Routine data recorded

****

Dispensing free care to under-fives for cases of malaria that covered a rapid diagnostic test and a course of artemisinin-based combination therapy through Medicines Sans Frontiers

Huff-Rousselle, M.

[81]

Cambodia, 2001/ LMI

Survey

Questionnaire

****

Providing reproductive health services by an NGO clinic

Mahyiuob Al-Honahi, H. Y.

[82]

Yemen, 2010/ Fragile

Descriptive observational study

Pre- and post-intervention surveys

****

Finding and case holding activities by the national TB control programme staff

Matousek, A. C.

[83]

Haiti, 2015/ LI

Cross-sectional

Record

***

Providing equitable surgical care in rural Haiti through free care available for the poorest by two NGO hospital

Mukherjee, J. S.

[84]

Haiti, 2007/ LI

Mixed method

Structured Interviews/Open-ended questions

***

Zanmi Lasante (NGO) has recruited, trained and financed a large cadre of community health workers to provide such linkages between communities and health centres in rural Haiti

Nunns, D.

[85]

Nepal, 2011/ LMI

Country case study

N/A

***

Providing reproductive health care for

Odindo, M. A.

[86]

Kenya, 2008/ LMI

Descriptive cross-sectional

Interview

*****

Providing awareness, outreach, counselling, testing, treatment, advocacy, home-based care, assistance to the orphans and legal issues.

Oleribe, O. O.

[87]

Nigeria, 2018/ LMI

Cross-sectional

N/A

***

Providing HIV testing and counselling, disclosure of results, post-test counselling and healthy lifestyle education and, distribution of free male condoms and Information, Education and Communication material

Oseji, M

[88]

Nigeria, 2014/ LMI

Review

Various publications, reports, public presentations and policy documents

N/A

Providing advocacy, awareness creation, and sensitisation programmes on reproductive health using behaviour change communication materials.

Ridde, V.

[89]

Burkina Faso, 2012/ LI

Qualitative study

Interviews and focus group discussions

*****

Providing free HIV treatment and services

Ron, A.

[90]

Guatemala and Philippines, 1999/ UMI And LMI

Case two countries study

N/A

***

Providing community health insurance schemes in rural populations

Sankaran, S.

[91]

India, 2017/ LMI

Qualitative study

N/A

****

Training community health workers to screen for and manage chronic hypertension

Sarwar, M. R.

[92]

Bangladesh, 2015/ LMI

Case studies

N/A

****

Providing maternal and child health and distribution of a micronutrient food supplement

Sharma, A. K

[93]

India, 2010/ LMI

Randomised control trial

N/A

****

Providing mid-day meals for primary school students

Singh, M. M

[94]

India, 2015/ LMI

Descriptive

Interview

****

Providing care home for PLHA

Singh, V.

[95]

India, 2017/ LMI

Quasi-experimental

N/A

****

Providing services delivered by community-based nutrition and health care providers (anganwadi workers and auxiliary nurse midwives)

Sivakumar, T.

[96]

India, 2019/ LMI

Cross-sectional descriptive

N/A

****

Providing mental health services through Community Based Rehabilitation

Soe, K. T

[97]

Myanmar, 2017/ Fragile

Cross-sectional descriptive

Routine data

*****

Providing community-based TB care to hard-to-reach populations

Solomon, Y.

[98]

Mali, 2008/ LI

Mix method

Observation

*****

Providing primary health care

Thomas, R.

[99]

India, 2013/ LMI

Cross-sectional descriptive

Routine data

*****

Providing three meals a day

van de Vijver, S.

[100]

Kenya, 2013/ LMI

Qualitative study

Previous studies and intervention project and comprehensive literature review

*****

Providing cardiovascular prevention for slums of Nairobi

Wandwalo, E.

[101]

Tanzania, 2004/ LMI

Mix method

In-depth interview/ Hospital files and cards, referral forms and laboratory registers

*****

Providing voluntary counselling and testing for HIV, diagnosis and treatment of TB, referral and follow up of patients and suspects, home-based care, psychological support and training

Zachariah, R.

[102]

Malawi, 2004/ LMI

Qualitative study

N/A

*****

Providing additional staff, supplementary drugs including antiretroviral drugs, technical assistance and infrastructure development