Table 1.
Overview of included studies
| Characteristics | Categories | Number of studies |
|---|---|---|
| Country | USA | 13 |
| Norway | 2 | |
| Canada | 4 | |
| Australia | 2 | |
| Germany | 1 | |
| Year of publication | 2013 | 1 |
| 2014 | 1 | |
| 2015 | 2 | |
| 2016 | 2 | |
| 2017 | 3 | |
| 2019 | 2 | |
| 2021 | 8 | |
| 2022 | 3 | |
| Sample size | ≤ 25 | 9 |
| 26–50 | 6 | |
| 51–75 | 1 | |
| 76–100 | 4 | |
| ≥ 101 | 2 | |
| Age | < 18 | 1 |
| 18–24 | 3 | |
| 25–29 | 1 | |
| 30–34 | 13 | |
| 35–39 | 4 | |
| Cancer type | Breast cancer | 12 |
| Lymphomas | 11 | |
| Leukemia | 9 | |
| Testes cancer | 8 | |
| Head and neck cancers | 8 | |
| Gynecological | 7 | |
| Colorectal cancer | 5 | |
| Gastric cancer | 5 | |
| Hematologic malignancies | 4 | |
| Thyroid cancer | 3 | |
| Ovarian cancer | 3 | |
| Sarcoma | 2 | |
| Solid tumors | 2 | |
| Soft tissue sarcoma | 2 | |
| Rhabdomyosarcoma | 2 | |
| Biphasic peritoneal mesothelioma | 2 | |
| Osteosarcoma | 2 |