. 2022 Feb 18;6(2):e30973. doi: 10.2196/30973

Table 3.

Audience participation and engagement metrics adjusted by video length in seconds.

Audience participation type	Events, n (%)	Video length (hh:mm:ss)	Engagement rate^a	Retention rate^b
No audience participation included	29 (76)	07:27:28	0.042	0.026
Audience participation included	9 (24)	03:17:12	0.049	0.016

^aEngagement rate is calculated by the sum engagement divided by the sum video length in seconds.

^bRetention rate is calculated by the sum retention divided by the sum video length in seconds.