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Summary of online lecture design components (N=45).
| Design componenta | n (%) |
| Slide deck (eg, Microsoft PowerPoint) | 25 (56) |
| Audio or narration | 23 (51) |
| Video (eg, procedural demonstration; does not include video recordings of slide decks) | 18 (40) |
| Unspecified design (eg, only described as online “lecture” or “module”) | 5 (11) |
| Animation (eg, dynamic 2D or 3D images) | 4 (9) |
| Visible lecturer (eg, talking head) | 1 (2) |
aArticles often utilized more than one design component.
