Table 2.
Characteristics of participants and procedures.
| Sample A | Sample B | Sample C | Subsample C | |
|---|---|---|---|---|
| Sample size | n = 727 | n = 826 | n = 886 | n = 274 |
| Gender | 59% female; 41% male | 60% female; 40% male | 57% female; 43% male | 58% female; 42% male |
| Age (M, SD, range) | M = 20.56 years; SD = 5.87; range = 14–34 years | M = 19.55 years; SD = 4.32; range = 14–34 years | M = 19.57 years; SD = 4.94; range = 14–34 years | M = 18.02 years; SD = 2.82; range = 15–32 years |
| Percentage of physically inactive individualsa | 22% | 24% | 26% | 23% |
| Data collection period | 9/2015–2/2016 | 3/2016–8/2017 | 9/2016–1/2017 | 2/2017–6/2017 |
| Type and sources of data collection | Paper-pencil version: 45% public schools (22 classes) 15% one university ]Online version: 12% university of applied science 17% two service companies 11% public administration agency |
Paper-pencil version: 48% public schools (23 classes) 31% one university Online version: 6% vocational school 9% university of applied science 7% two service companies |
Paper-pencil version: 27% public schools (15 classes) 6% one university ]Online version: 12% university of applied science 60% three service companies 7% public administration agencies |
Online version: 7% one university 9% two service companies |
Subsample C was generated by asking 567 adolescents and young adults of Sample C to fill in the inventory a second time after 2 weeks; therefore, 278 individuals participated twice. aActivity level was assessed with the BSA-F from Fuchs et al. (2015).