Table 3.

The Important Features of Online Classes

Itemsa)	Total	PM1	PM2	M1	M2	p-value (eta-squared)	Post-hoc
Ensuring good voice quality	4.49±0.80	4.35±0.78	4.34±1.02	4.55±0.68	4.72±0.62	0.001 (0.038))	PM1<M2
							PM2<M2
Using the virtual pointer to identify the sentence or the part of the screen being explained	4.30±0.84	4.00±0.79	4.09±0.96	4.50±0.78	4.65±0.62	<0.001 (0.104)	PM1<M1, M2
							PM2<M1, M2
Complying with the scheduled upload dateb)	4.18±0.94	4.00±0.93	3.85±1.02	4.42±0.83	4.47±0.82	<0.001 (0.078)	PM1<M1, M2
							PM2<M1, M2
Organizing the videos concisely around key contentb)	4.14±0.84	3.97±0.74	3.98±0.99	4.32±0.79	4.31±0.76	0.001 (0.041)	PM1<M1, M2
							PM2<M1, M2
Including specific examples that help students' understanding	3.84±0.84	3.83±0.79	3.73±0.92	3.93±0.84	3.90±0.80	0.318	-
Indicating key content clearly, such as learning objectives	3.90±0.89	3.86±0.84	3.67±0.97	4.17±0.78	3.90±0.88	0.001 (0.040)	PM2<M1
Providing additional learning material to help students' understanding	3.33±1.03	3.43±0.88	3.11±1.07	3.54±1.06	3.27±1.06	0.012 (0.026)	PM2<M1
Having a Q&A system for feedback, such as bulletin boards or instant messenger	3.37±1.06	3.40±0.91	3.17±1.13	3.82±0.92	3.10±1.14	<0.001(0.069)	PM1, PM2, M2<M1
Explaining the lecture material in detail	3.18±1.09	3.41±0.94	3.38±0.92	3.08±1.16	2.82±1.24	<0.001 (0.048)	M2<PM1
Utilizing techniques to hold the attention of students, such as questioning	3.00±1.13	3.12±1.02	3.25±1.10	2.75±1.22	2.85±1.12	0.004 (0.032)	M1<PM2
Encouraging active student participationc)	2.31±1.08	2.82±1.01	2.22±1.04	2.33±1.09	1.85±0.95	<0.001 (0.105)	M2<PM2, M1
							PM2, M1<PM1

Data are presented as mean±standard deviation.

PM: Premedical course, M: Medical student.

^a)1 (not important at all), 2 (not important), 3 (moderate), 4 (important), and 5 (very important).

^b)Only applicable to asynchronous recorded lectures.

^c)Only applicable to real-time lectures.