“…Two-by-two comparisons for each of the three response options showed that the number of people who said they intended to give blood did not differ between the two conditions, χ 2 (1, n = 114) = 0.01, P = .916, OR = 0.97, 95% CI [0.62-1.53]. In contrast, the proportion of people who replied "I cannot and/or do not want to give blood at the current time" was higher in the "save lives" condition than in the control condition, χ 2 (1, n = 142) = 3.77, P = .052, OR = 1.77, 95% CI [1.14-2.74], and the proportion of people who replied "I do not wish to give blood again" was lower in the "save lives" condition than in the control condition, 2 (1, n = 78) = 6.20, P = .013, OR = 0.46, 95% CI [0.27-0.79]. Interaction between conditions and answer choice (temporarily no vs. no) was significant, χ 2 (1, n = 220) = 9.95, P = .002, OR = 2.51, 95% CI [1.41-4.48].…”