Background
Methods
Cross-cultural translation and adaptation
Final questionnaire
Measurement properties of the CSC-W DV
Subjects and setting
Data collection
Statistical analysis
Results
Sample characteristics
Socio-demographics | |
Gender, n (%) | |
Male | 132 (39) |
Female | 205 (61) |
Age in years, M (SD) | 50.6 (8.6) |
Education, n (%) | |
Low | 80 (24) |
Medium | 120 (36) |
High | 134 (40) |
Health characteristics | |
Cancer type, n (%) | |
Breast cancer | 153 (45) |
Colon cancer | 40 (12) |
Lymph node cancer | 31 (9) |
Prostate and testicular cancer | 29 (9) |
Other types of cancer | 87 (25) |
Months since diagnosis, M (SD) | 10.7 (6.3) |
Treatment completed, n (%) | |
Yes | 234 (69) |
No | 107 (31) |
Type of treatment, n (%) | |
Surgery | 54 (17) |
Chemotherapy | 20 (6) |
Surgery and chemotherapy | 50 (15) |
Surgery and radiation | 41 (12) |
Surgery, chemotherapy and radiation | 66 (20) |
Surgery, chemotherapy, radiation and hormonal therapy | 47 (14) |
Other combinations of treatment | 53 (16) |
WRFQ (range 0–100) | |
M (SD) | 77.7 (17.4) |
High, n (%) | 93 (29) |
Medium, n (%) | 111 (35) |
Low, n (%) | 114 (36) |
Fatigue, M (SD) (range 8–56) | |
Total (n = 290) | 30.3 (11.4) |
Low (n = 114) | 17.6 (5.3) |
Medium (n = 113) | 30.6 (2.9) |
High (n = 113) | 43.0 (5.3) |
Depressive symptoms (range 0–27) | |
M (SD) | 4.7 (3.8) |
Low, n (%) | 301 (88) |
High, n (%) | 40 (12) |
Self-rated health, n (%) | |
High | 256 (76) |
Low | 79 (24) |
Structural validity
CSC-W DV | CSC-W21 | Items | Factor 1 working memory | Factor 2 executive function |
---|---|---|---|---|
1 | 1 | I have difficulty remembering what I intended to write |
0.802
| 0.052 |
2 | 2 | I have difficulty remembering my train of thought as I am speaking |
0.841
| −0.045 |
3 | 3 | I have difficulty remembering the content of telephone conversations |
0.841
| −0.001 |
4 | 4 | I have difficulty remembering the content of conversations and/or meetings |
0.775
| 0.102 |
5 | 5 | I have difficulty remembering a word I wish to say |
0.816
| −0.037 |
6 | 6 | I have difficulty remembering the name of a familiar object or person |
0.851
| −0.068 |
7 | 7 | I have difficulty remembering information that is ‘on the tip of my tongue’ |
0.796
| 0.011 |
8 | 8 | I have difficulty remembering things someone has asked me to do |
0.598
| 0.256 |
9 | 9/12a
| I have difficulty to understand that specific tasks along to a larger whole | −0.001 |
0.774
|
10 | 10 | I have difficulty understanding how a task fits into a plan or system | −0.110 |
0.890
|
11 | 11 | I have difficulty knowing where to look for information to solve a problem | −0.112 |
0.917
|
12 | 13 | I have difficulty figuring out how a decision was reached | −0.198 |
0.955
|
13 | 14 | I have difficulty using new information to re-evaluate what I know | 0.095 |
0.777
|
14 | 15 | I have difficulty considering all aspects of what I hear or see instead of focusing on only one part | 0.195 |
0.688
|
15 | 16 | I have difficulty understanding what a problem is when it occurs and clearly stating what the problem is | 0.144 |
0.651
|
16 | 17 | I have difficulty following the flow of events | 0.356 |
0.514
|
17 | 18 | I have difficulty understanding graphs or flowcharts | 0.233 |
0.587
|
18 | 19 | I have difficulty completing all steps of a task or activity | 0.326 |
0.543
|
20b
| I have difficulty staying with a task until completion | 0.458 | 0.350 | |
19 | 21 | I have difficulty putting steps in order such that the most important steps are done first | 0.165 |
0.637
|
Measurement characteristics
Valid n (missing or ‘not applicable’) | Meana (SD) | Range (0–100) |
n (%) at floor |
n (%) at ceiling | Cronbach’s α
| |
---|---|---|---|---|---|---|
Working memory (8 items) | 341 (0) | 32.2 (19.0) | 0–85.7 | 27 (8) | 0 (0) | 0.93 |
Executive function (11 items) | 336 (5) | 19.8 (15.8) | 0–72.7 | 52 (15) | 0 (0) | 0.94 |
Total score (19 items) | 341 (0) | 25.1 (15.8) | 0–76.5 | 20 (6) | 0 (0) | 0.95 |
Reliability
Construct validity
Variable | CSC-W DV, M (SD) |
P value |
---|---|---|
Work functioning (WRFQ2.0) (n = 318) | ||
High (n = 93, 29 %) | 14.1 (10.8) | <0.001a
|
Medium (n = 111, 35 %) | 24.2 (13.1) | |
Low (n = 114, 36 %) | 35.4 (15.0) | |
Fatigue (CIS) (n = 340) | ||
Low (n = 114, 34 %) | 20.8 (13.9) | 0.001b
|
Medium (n = 113, 33 %) | 26.3 (15.8) | |
High (n = 113, 33 %) | 28.5 (16.6) | |
Depressive symptoms (PHQ-9) (n = 341) | ||
Low (n = 301, 88 %) | 23.2 (14.7) | <0.001 |
High (n = 40, 12 %) | 39.6 (16.2) | |
Perceived health (SF-36) (n = 335) | ||
High (n = 256, 76 %) | 24.5 (14.8) | 0.14 |
Low (n = 79, 24 %) | 27.5 (18.4) |