. Author manuscript; available in PMC: 2012 Jan 2.

Published in final edited form as: Prev Med. 2006 Jul 27;43(5):402–405. doi: 10.1016/j.ypmed.2006.06.012

Table 2.

Mean acceptability scores (SD) for 50% and 80% vaccine effectiveness, by saturation level among Rhode Island prisoners 2002

Saturation	50% Effective (protected half of the people)	80% Effective (protected most (80%) of the people)	t-test ^a
10% (a few)	3.97 (0.95)	4.16 (0.87)	<0.001
50% (half )	4.08 (0.85)	4.32 (0.72)	<0.001
90% (almost all (90%))	4.10 (0.83)	4.34 (0.83)	<0.001
F-test ^b	<0.001	<0.001

Question:

“If an AIDS vaccine protected _(effectiveness) _ of the people who took it and _ (saturation)_ people in the population had already taken the vaccine, I would take the vaccine”.

Answer:

1(strongly disagree) 2(disagree) 3(neither agree nor disagree) 4(agree) 5 (strongly agree).

P-values from paired t-tests comparing scores between the two levels of effectiveness.

P-values from one-way repeated measures ANOVA comparing scores among the three levels of saturation.