| | Question 1 „comfortable" | Question 2 „strange" | Question 3 „too long" | Question 4 „do it again" |
|---|
| | healthy | patients | healthy | patients | healthy | patients | healthy |
|---|
number of respondents | 68 | 22 | 68 | 21 | 66 | 22 | 61 |
means or percentages | 3.03*** 1
| 2.73** 1
| 33.8%*** 2
| 28.6%*** 2
| 12.1%*** 2
| 0% | 93.4%*** 2
|
healthy vs. patients | ns | ns | ns | N/A |
effect of
| | | | | | | |
Question 2 „strange" | ns | ns | -- | -- | *** 3
| ns | ** 3
|
Question 3 „too long" | ns | ns | *** 3
| ns | -- | -- | *** 4
|
Question 4 „do it again" | ns | ns | ** 3
| ns | *** 4
| N/A | -- |
having a DTI scan | ns | N/A | ns | N/A | ns | N/A | ns |
study5
| ns | N/A | ns | N/A | ns | N/A | ns |
study duration6
| ns | N/A | ns | N/A | ns | N/A | ns |
gender | * 7
| * 7
| ns | ns8
| ns | ns | ns |
males | 2.63 | 3.12 | 45.2% | 25% | 10% | 0% | 88.9% |
females | 3.34 | 1.40 | 24.3% | 40% | 13.9% | 0% | 97.1% |
- Abbreviations: * p < .05; ** p < .01; *** p < .001; ns not significant; N/A not applicable
- Footnotes: 1 one-sample t-test versus mean of 4; 2 χ2 test versus 0% (Questions 2 and 3) or 100% (Question 4); 3 people noting something strange more often found the session too long and were less willing to participate again; 4 people finding session too long are less willing to participate again; 5 tested by one-way ANOVA (Question 1) or χ2 test (Questions 2–4); 6 tested by Pearson's r (Question 1) or by Spearman's rho (Questions 2–4); 7 significant interaction (p = .002) between gender and participant group as assessed by 2 × 2 ANOVA; 8 trend with p < .07. For further statistical details see main text.
- Healthy refers to the sample of healthy subjects and patients to the sample of stroke patients. For question 1, mean ratings of the 7-point scale are given. For questions 2 to 4 the data refer to the proportion of "yes" answers (i.e. feeling something strange, considering the scanning as too long, and would like to participate again). The rows "effect of" indicate whether the named factors significantly affected the answer to the questionnaire items. For instance, Question 1 was answered the same, irrespective of the answer on Question 2, while Question 3 differed in healthy controls depending on the answer on Question 2. Note that the number of males and females is not balanced. Question 4 was not presented to the patients.
