Table 2.
Quality of life in both groups (A1 and A2) and between-group comparisons (A1 vs. A2) regarding the scores of the QLQ-C30 questionnaire
| EORTC QLQ C-30 | Study groups | Arithmetic mean | Standard deviation | Mann-Whitney U-test |
|---|---|---|---|---|
| Functional scales | ||||
| (best score – 100 points) | ||||
| Physical functioning (1–5) | A2 | 68.49 | 24.12 | Z = 0.95 |
| A1 | 66.05 | 24.82 | p = 0.3422 | |
| Role functioning (6, 7) | A2 | 84.62 | 19.84 | Z = 2.87 |
| A1 | 77.74 | 21.81 | p = 0.0042 | |
| Emotional functioning (21–24) | A2 | 64.46 | 20.60 | Z = 3.48 |
| A1 | 73.34 | 24.35 | p = 0.0005 | |
| Cognitive functioning (20–25) | A2 | 69.94 | 23.29 | Z = 1.19 |
| A1 | 72.67 | 24.69 | p = 0.2346 | |
| Social functioning (26, 27) | A2 | 78.06 | 20.91 | Z = 0.89 |
| A1 | 76.54 | 19.44 | p = 0.3724 | |
| General quality of life (29, 30) | A2 | 38.10 | 14.75 | Z = 2.23 |
| A1 | 41.74 | 16.47 | p = 0.0259 |
EORTC QLQ-C30 – European Organization for Research and Treatment of Cancer Quality of Life Questionnaire; A1 – members of Amazon groups; A2 – control group, p – statistical significance