Table 4.

Duration parameter in gamified educational interventions

Citation	Length of Gamified Interventions
Ortiz-Rojas et al., 2017	<1 month: 4, 2—4 months: 5, 1 semester: 5, Not Stated: 6, < 1 semester: 3
Kim & Castelli, 2021	less than 1 h: 5, 2–16 weeks: 11, 1–2 years: 2
Bai et al., 2020	1 month-3 months: 10, <1 weeks: 6, ≥1 semesters: 5, 3 months-1 semester: 4, 1 week-1 month: 3, No data reported:2
Dehghanzadeh et al., 2019	< 1 Hour: 6, 1 Hour: 2, < 3 weeks: 4, 3-6 weeks: 4, 6 weeks: 2, 2 months: 1, 3 months: 1, 6 months: 1
Ortiz et al., 2016	1 semester: 16, 1-14 weeks: 7, 1-4 months: 2, 1-24 h: 1, ≥ 1 year: 1, Not specified: 1, Other: 2(14)
Bai et al., 2019	three-quarters of a term: 4, one quarter of a term: 3, two-quarters of a term: 3, more than one term: 1, No data: 2
Sailer & Homner, 2020	1 day or less, 1 week or less (but longer than 1 day), 1 month or less (but longer than 1 week), half a year or less (but longer than 1 month), more than half a year
Ekici, 2021	between 0 and 4 months long: 16, six months long: 2, shorter than a month: 3