Table 3 Comparison of scores based on presence or absence of a feature

Contains sophisticated special effects

10

94.3

34

87.1

3.83 × 10e-7

Contains at least one of either a pretest or posttest

6

92

40

87.8

0.004

Audience laughed during talk

11

91

35

87.5

0.07

Objectives or outline

30

87.1

27

88.5

0.22

Presentation was on time

30

88.9

16

87.5

0.298

Summary occurred during talk

27

88

19

88.9

0.34

Didactic lecture vs. unknown cases

28 (didactic)

88.6

16 (unknown)

88.7

0.95

Questions for audience

8

88.3

38

88.4

0.95