Skip to main content

Table 4 Understanding of the study by consent form

From: Experimenting with modifications to consent forms in comparative effectiveness research: understanding the impact of language about financial implications and key information

  Experiment 1 Experiment 2
Form A: standard (n = 319) N (%) Form B: tailored compensation (n = 339) N (%) Form B: tailored compensation/standard key information (n = 248) N (%) Form C: modified key information (n = 254) N (%) Form D: clarified costs (n = 251) N (%)
Which of the following best describes how treatment will be decided for patients in this study?      
A computer will randomly assign each patient to one of the two treatment groups. (correct) 218 (68.3) 231 (68.1) 109 (43.9) 149 (58.66) 116 (46.22)
A doctor will decide each patient’s treatment group based on what he/she thinks is best for that patient. 70 (21.9) 79 (23.3) 116 (46.8) 85 (33.46) 120 (47.81)
The patient’s family member will decide which treatment the patient receives. 31 (9.7) 29 (8.6) 23 (9.3) 20 (7.87) 15 (5.98)
What best describes what this study is testing?      
How well patients with this type of stroke do when treated with one type of IV fluid compared to another. (correct) 254 (79.6) 268 (79.0) 169 (68.2) 181 (71.26) 178 (70.92)
The frequency of different complications with this type of stroke based on where the patient is treated. 16 (5.0) 30 (8.9) 28 (11.3) 25 (9.84) 32 (12.75)
The impact of patients’ blood types on rates of recovery from this type of stroke. 49 (15.4) 41 (12.1) 51 (20.6) 48 (18.90) 41 (16.33)
Both incorrect 44 (13.8) 44 (13.0) 69 (27.8) 55 (21.7) 62 (33.3)
One correct 78 (24.5) 91 (26.8) 80 (32.3) 68 (29.3) 84 (36.2)
Both correct 197 (61.8) 204 (60.2) 99 (39.9) 131 (39.1) 105 (31.3)
  1. Responses to survey questions indicating understanding of the hypothetical study by experiment and consent form version