Virtual inverted classroom to replace in-person radiology lectures at the time of the COVID-19 pandemic - a prospective evaluation and historic comparison

Table 1 Students’ Assessment of Individual Lectures of the Radiology Lecture Series Following the 2003Concept of Virtual Inverted Classroom

	Number of replies	Median (IQR)	Mean ± SD	Pairwise comparison
Learning video was useful
Thorax	96	2 (1)	2.4 ± 1.0	p < 0.001^a
Urology/MRT	92	2 (1.25)	2.3 ± 1.0	p < 0.001^a
Gynaecology/Breast^f	89	3 (1)	3.2 ± 1.2	p < 0.001^b
Angiology/Intervention	94	2 (1)	2.4 ± 1.0	p < 0.001^a
Gastroenterology	96	2 (1)	1.9 ± 1.0	p < 0.001^a
Paediatrics	94	2 (1)	2.3 ± 1.1	p < 0.001^a
ARS was useful
Thorax	79	2 (2)	2.2 ± 1.2	ns
Urology/MRT	75	2 (2)	2.3 ± 1.3	ns
Gynaecology/Breast	72	2 (2)	2.7 ± 1.3	p < 0.001^c
Angiology/Intervention	76	2 (2)	2.2 ± 1.2	ns
Gastroenterology	87	1 (1)	1.9 ± 1.3	p < 0.001^a
Paediatrics	83	2 (2)	2.3 ± 1.3	ns
Buzz group was useful
Thorax	83	4 (2)	4.0 ± 1.5	ns
Urology/MRT	78	4 (2)	4.0 ± 1.5	ns
Gynaecology/Breast	79	4 (2)	4.2 ± 1.4	ns
Angiology/Intervention	79	4 (2)	3.9 ± 1.5	ns
Gastroenterology	82	4 (3)	3.8 ± 1.6	ns
Paediatrics	80	4 (2)	3.9 ± 1.5	ns
Plenary clinical case studies were useful
Thorax	90	2 (1)	2.4 ± 1.0	p = 0.004^a p = 0.001^c
Urology/MRT	81	3 (1)	2.5 ± 1.0	p < 0.001^c
Gynaecology/Breast	83	3 (2)	3.1 ± 1.1	p = 0.004^d p = 0.003^e p < 0.001^c
Angiology/Intervention	85	2 (1)	2.4 ± 0.9	p = 0.003^a p = 0.001^c
Gastroenterology	93	1 (1)	1.7 ± 1.1	p = 0.001^{d, e} p < 0.001^a
Paediatrics	90	2 (1)	2.3 ± 1.0	p < 0.001^a

Lectures were rated at a scale of 1 (fully agree) to 6 (totally disagree). P-value cut-off is set at 0.013 to correct for multiple testing
^a Concerning difference to gynaecology lecture
^b Concerning difference to all other lectures
^c Concerning difference to gastroenterology lecture
^d Concerning difference to thorax lecture
^e Concerning difference to angiology lecture
^f Video exceeded recommended length more than threefold
ARS: audience response system, ns: no significant difference to other lectures

ISSN: 1472-6920