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. 2020 Jun 12;20:918. doi: 10.1186/s12889-020-08973-2

Table 1.

General Characteristics of 138 Included Articles

Category Count (percentage)
Date of Publication
 2011–2017 85 (62%)
 2005–2010 48 (35)
  < 2005 5 (4)
Continenta,b
 Africa 2 (1)
 Asia 18 (13)
 Australasiac 9 (7)
 Central/South America d 1 (1)
 North Americae 49 (36)
 Europef 60 (43)
Quality Assessmentb
 4 stars 66 (48)
 3 stars 59 (43)
 2 stars 13 (9)
Study Designa,b
 Cohort 44 (32)
 Cross-sectional 5 (4)
 Mixed method 4 (3)
 Qualitative 4 (3)
 Quasi-experimental 23 (17)
 Randomized control trial 63 (46)
 Otherg 3 (2)
Theories of Behaviour Change Useda
 The Behaviour Change Approach 2 (1)
 The Community Organization Approach 2 (1)
 Goal-Systems Theory 1 (1)
 Health Belief Model 1 (1)
 Innovation-Diffusion Theory 3 (2)
 Integrated Theory of Behaviour Change 1 (1)
 Self-Regulation Theory 2 (1)
 Social Cognitive Theory 8 (6)
 Social-Ecological Theory 5 (4)
 Social Learning Theory 6 (4)
 Theory of Planned Behaviour 5 (4)
 Transtheoretical Model 16 (12)

a Total count sums to > 138 as studies can fall into more than one category

b Due to rounding, total percentages do not equal 100

c China, India, Iran, Korea, Turkey, United Arab Emirates, Indonesia, Sri Lanka, Vietnam, Japan, Malaysia, Taiwan, Pakistan, Singapore, and Uzbekistan

d Brazil,Paraguay

e Canada, Mexico, United States

f Denmark, Finland, Italy, Netherlands, Spain, Sweden, United Kingdom, France, Poland, Sweden, Croatia, Lithuania, Belgium, Greece, Portugal, Norway, Malta, Switzerland

g Case-control, case-study