Table 3. 95% Confidence Intervals for the comparison of face-to-face consent discussion with web-based video teaching, with respect to the number of inhalation errors.

Number of errors	Web-based video teaching	Personal instruction	Difference	95% CI Lower limit	95% CI Lower limit
≥ 2	0.440	0.403	0.037	-0.120	0.194
≥ 3	0.213	0.143	0.070	-0.051	0.192
≥ 4	0.093	0.065	0.028	-0.057	0.114
≥ 5	0.053	0.052	0.001	-0.070	0.072