Table 2.
Methodological information arranged per author.
| Reference | Methods | Sample size | Sample age |
|---|---|---|---|
| Hickman et al. (2021) | Cross sectional survey | n = 10 000 | 16–25 years old |
| Chalupka et al. (2020) | General review (no specific method) | None mentioned | “Children” |
| Pinto and Grove-White (2020) | Observational | One primary school (sample size not further specified) | Primary school aged children (5–12 years old) |
| Plautz (2020) | Newspaper article | None mentioned | 12–25 years old |
| Ratinen and Uusiautti (2020) | Cross-sectional survey (descriptive design) | 950 | 11–17 years old (M = 13.6) |
| Taylor and Murray (2020) | Newspaper article | None mentioned | “Children” and “Youth” |
| Zummo et al. (2020) | Qualitative analysis of letters | n = 350 | 12–18 years old |
| Li and Monroe (2019) | Cross-sectional survey (descriptive design) | n = 728 | 13–18 years old (9–12th graders) |
| Burke et al. (2018) | General review (no specific method) | None mentioned | “Children” |
| Boggs et al. (2016). | General review (no specific method) | None mentioned | “Children” |
| Stevenson and Peterson (2016) | Cross-sectional survey (descriptive design) | n = 1486 | 11–15 years old |
| Ojala (2013) | Cross-sectional survey (descriptive design) | n = 321 | M = 17.2 years old |
| Ojala (2012a) | Cross-sectional survey (descriptive design) | Late childhood (n = 90) Adolescents (n = 146) |
Late childhood (M = 11.7 years old) Adolescents (M = 16.4 years old) |
| Ojala (2012b) | Cross-sectional survey (descriptive design) | n = 293 | 12 years old |
| Strife (2012) | Semi-structured qualitative interviews | n = 50 | 10–12 years old |
| Sobel (2007) | General review (no specific method) | None mentioned | “Children” |
| Nagel (2005) | Phenomenological interviews | n = 40 | 7th grade (12–13 years old) |
| Huang and Yore (2005) | Cross-sectional survey (descriptive design) | n = 761 | 5th grade (10–11 years old) |