Question

Median (bias) SE of median video group (n=25)

Median (bias) SE of median Practical demonstration group (n=35)

p value

(Mann-Whitney U test)
1 The content of the presentation was good.

4 (0) 0

4 (0) 0

 p=0.909
2 The delivery of the presentation was satisfactory.

4 (0) 0

4 (0) 0

 p=0.344
3 The video/practical demonstration improved my understanding of ophthalmoscopy.

4 (-0.42) 0.49

4 (0) 0

 p=0.024*
4 The video/practical demonstration improved my technique of ophthalmoscopy.

4 (-0.42) 0.49

5 (-0.43) 0.50

 p<0.0001***
5 I would recommend this video/teaching session to another student.

4 (0) 0.0

4 (0.03) 0.16

 p=0.0048**
6 I would watch this video/attend this teaching session again.

3 (0.42) 0.49

4 (0) 0.03

 p=0.037*
7 The video/practical demonstration was audible & understandable.

4 (-0.42) 0.49

4 (0) 0.03

 p<0.0001***
8 I found it easy to ask questions.

4 (-0.15) 0.36

4 (0) 0.02

 p=0.0031**
9 The teaching fulfilled my expectations.

4 (-0.01) 0.10

4 (0) 0.01

 p=0.150
10 The teaching helped me achieve my learning objectives.

4 (0) 0

4 (0) 0.01

 p=0.483
11 In future, only the video/this form of teaching should be used to teach ophthalmoscopy.

1 (0.08) 0.26

3 (0.01) 0.10

 p<0.0001***
12 The video/practical demonstration was thorough.

3

(0) 0.14

4

(0) 0.01		 p<0.0001***
13 The video was better than the practical demonstration.

2

(-0.01) 0.10

n/a

 n/a
Table 2: Median Likert scores with bias and SE of Median, for each question in the video and practical demonstration groups respectively. Bias and SE of mean were estimated by bootstrapping. Positive bias indicates the median is underestimating the population median, while negative bias implies the median is overestimating the population median. The Mann-Whitney U test was used to compare groups for differences in response score. P<0.05 was taken to be statistically significant (marked with *). p=0.01 was considered highly significant (**) and p=0.001 very highly significant (***). SE, Standard Error.