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Table 3 Independent Samples t-Tests: Eye Tracking Ratings on Seven Selected Slides

From: Using eye tracking and gaze pattern analysis to test a “dirty bomb” decision aid in a pilot RCT in urban adults with limited literacy

  Intervention Group 95 % CI for Mean Difference
Intervention Control    
Slide M SD n M SD n   t df
1. What is a dirty bomb? 3.53 1.13 17 4.00 1.00 11 −.387,1.33 1.13 26
2. A dirty bomb is not an atomic bomb. 3.65 1.49 17 2.50 1.29 14 −2.19,−.11 2.26* 29
3. What to do if you’re outside 3.81 1.17 16 2.75 1.06 12 −1.94,−.18 2.48* 26
4. What to do if you’re inside. 3.88 .96 16 2.31 1.38 13 −2.46,−.68 3.61** 27
5. What should I do about my children and family? 3.53 1.06 15 2.38 1.19 13 −2.02.−.27 2.70* 26
6. What to do about food and water? 3.41 1.29 17 2.60 1.18 15 −1.71,.08 1.86 30
7. How do I know about radiation exposure? 3.41 1.33 17 2.64 1.22 14 −1.71,.17 1.67 29
  1. Scale = 5 points. Larger means more consistency/precision of eye-tracking
  2. *p ≤ .05, **p ≤ .005