Box 1.
Variables Included in the Multivariate Linear Regression Analysis
| Patient Characteristics | |
|---|---|
| Age | In years |
| Education | Low educational level (i.e., none/primary/low-level vocational education) |
| Intermediate educational level (i.e., secondary school/intermediate vocational education) | |
| High educational level (i.e., higher vocational education/university) | |
| Children | Has children |
| Has no children | |
| Marital status | Single/divorced/widowed |
| In a relationship | |
| Preferred level of involvement in decision making | Patient driven |
| Shared | |
| Oncologist driven | |
| Hospital, Oncologist, and Consultation Characteristics | |
| Hospital affiliation | General teaching hospital |
| University medical center | |
| Oncologist gender | Male |
| Female | |
| Use of online survival indicator software during the consultation | Adjuvant! not used |
| Adjuvant! used | |
| Consultation duration | In hours and minutes |
| Disease Characteristics | |
| TNM stage of diseasea | Stage I |
| Stages II and III | |
| Size of tumor | Tumor 0–20 mm |
| Tumor >21 mm | |
| Tumor-positive lymph nodes | Absent |
| Present | |
a
TNM staging source: American Joint Committee on Cancer. Cancer Staging Manual. 7th ed. Chicago, IL: American College of Surgeons, 2015.