Table 3 Descriptive summary of the empirical studies included in the literature review

Year

1995–1999: n = 3

[62,63,64]

2005–2009: n = 1

[65]

2010–2014: n = 8

[60, 61, 66,67,68,69,70]

2015–2020: n = 6

[48, 71,72,73,74,75]

Country of origin

Australia: n = 1

[48]

Canada: n = 2

[68, 69]

Germany: n = 7

[60, 66, 70, 72,73,74, 76]

Singapore: n = 1

[71]

Spain: n = 1

[61]

UK: n = 1

[67]

USA: n = 5

[62,63,64,65, 75]

Health systems

Beveridge Model (single payer): n = 3

[48, 61, 67]

Bismarck Model (multiple payer): n = 7

[60, 66, 70, 72,73,74, 76]

Hybrid Model (multiple payer): n = 6

[62,63,64,65, 71, 75]

National Health Insurance Model (single payer): n = 2

[68, 69]

Unit of planning

Multiple professionals: n = 9

[60, 61, 63, 66, 69, 70, 74,75,76]

Eye care professionals: n = 2

[64, 71]

Mental health professionals: n = 2

[65, 73]

General practitioners (GPs): n = 2

[48, 67]

Dental care: n = 1

[72]

Oncologists: n = 1

[68]

Otolaryngologists: n = 1

[62]