Table 2.
Table of characteristics of reviews with only minor methodological limitations
| Review | N | Years of publication of included studies | Study designs1 | Interventions or strategies3 | Populations2 | Geographical settings |
|---|---|---|---|---|---|---|
| Abdullahi et al., 2016 [39] | 18 | 2008–2014 | Cross-sectional: 17. Qualitative: 1 | Sensitization campaigns and communication strategies: 3 |
Adolescent: 9 Parents: 14 Teachers: 2 |
South Africa: 6. Cameroon: 2. Uganda: 2. Nigeria: 2. Kenya: 1. Ghana: 1. Tanzania: 1. Botswana: 1. Mali: 1. Malawi: 1 |
| Badawy et al., 2017 [40] | 19 | 2010–2016 | RCT: 11. Pre-post pilot design: 6. QES: 2 |
Reminder: 15 Mobile phone app platform intervention: 4 |
Adolescents (12-24): 19 | USA: 9. Switzerland: 3. Hong Kong: 2. Colombia: 1. Wales: 1. Italy: 1. New Zealand: 1. Germany: 1 |
| Ferrer et al., 2014 [41] | 41 | 2004–2012 | N/R4 | N/A5 | N/R4 | USA: 24. Uke: 9. Australia: 3. Sweden: 2. Hong Kong. 2. Canada: 1 |
| Fu et al., 2014 [4] | 33 | 2004–2013 |
RCT: 10 N/R4: 23 |
Educational intervention: 15 Comparative message persuasiveness: 18 |
Parents: 12. Parents of girls: 5. Parents of either sex: 2. Adolescents (12-26): 21. Only women: 7. Only men: 3. Both: 3 Adults: 1 |
USA: 21. Canada: 3. Australia: 2. England: 2. China: 1. India: 1. Ireland: 1. Hong Kong: 1. Sweden: 1 |
| Hendry et al., 2013 [42] | 72 | 2004–2011 | Qualitative: 28. Surveys: 44 | N/A5 | Adolescents (7-26) or their parents. Mostly women | USA: 32. UK: 15. Australia: 4. Malaysia: 3. India: 3. Canada: 3. Hong Kong: 2. Sweden: 2. Italy: 2. Thailand: 1. Brazil: 1. Vietnam: 1. Netherlands: 1. Korea: 1. Korea, Taiwan, Thailand and Malaysia: 1 |
| Johnson et al., 2018 [43] | 53 | 1996–2017 |
Cross-sectional: 34 Pre-posttest: 10 RCT: 8 Non-RCT: 1 |
Education strategies: 38 Restructure strategies: 26 Quality strategies: 13 |
N/R4 | Southern Africa: 16. Western Africa: 16. Eastern Africa: 14. Middle Africa: 7 |
| Kang et al., 2018 [44] | 5 | 2013–2016 |
RCT: 3 Cluster RCT: 2 |
Reminders: 5 Reminders and education: 3 |
Mostly female adolescents (9-26) One study included males (11-17) | USA |
| Kim et al., 2017 [45] | 22 | 2009–2015 |
Quantitative: 16 Qualitative 6 |
A culturally tailored Spanish educational radionovela | Parents, mostly of female adolescents: 22 Only mothers (18-64): 15 | USA |
| Newman et al., 2013 [46] | 24 | N/R4 | Cross-sectional studies: 27. Cohort studies: 2 | N/A5 |
Adult men: 21 Boys (14-19): 2 |
USA: 12. Australia: 3. Sweden: 2. Canada: 1. Germany: 1. Netherlands: 1. New Zealand: 1. Philippines: 1. Singapore: 1. South Korea: 1 |
| Newman et al., 2018 [47] | 79 | 2009–2017 |
Cross-sectional: 67 Longitudinal: 7 Cohort: 1 Case-control: 1 QES: 1 Clustered non-RCT: 1 Cluster-RCT: 1 |
N/A5 |
Parents of girls: 45 Parents of boys: 10 Parents of either: 24 Sex of parents: Both: 44. Mothers: 24. Not specified: 11 |
USA: 55. Canada: 4. Denmark: 2. Norway: 2. Puerto Rico: 2. Australia: 1. Fiji: 1. Hong Kong: 1. Italy: 1. Kenya: 1. South Africa: 1. Tanzania: 1. Turkey: 1. United Arab Emirates: 1. Vietnam: 1 |
| Radisic et al., 2016 [48] | 18 | 2010–2015 |
Quantitative: 14 Qualitative: 3 Mixed-methods: 1 |
N/A5 | Parents, mostly of male adolescents (9-26) | USA: 12. Canada: 2. Italy: 2. Denmark: 2 |
| Rambout et al., 2013 [49] | 22 | 2008–2011 |
Quantitative: 19 Qualitative: 1 Mixed-methods: 2 |
N/A5 | Adolescents (26 years or younger) | USA: 21. Canada: 1 |
1The study design terms listed here are those reported in the individual reviews. They are therefore not consistent across reviews
2The ages of the participants have been included when reported
3This column reports only the number of studies of interventions of strategies included in the reviews. Not all reviews included interventions as some focused on stakeholders’ views of communication interventions and of factors affecting their implementation
4N/R: not reported
5N/A: not applicable