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Table 1 Attributes and levels used for the choice-based conjoint analysis

From: Patient preferences for palliative treatment of locally advanced or metastatic gastric cancer and adenocarcinoma of the gastroesophageal junction: a choice-based conjoint analysis study from Germany

Attributes Factor levels
Level 1 Level 2 Level 3 Level 4
1. Ability to self-care No assistance required for activities of daily living Little assistance required for activities of daily living A lot of assistance required for activities of daily living Complete assistance required for activities of daily living; bed-ridden
2. Treatment tolerability (adverse reactions) No or mild adverse reactions possible; no hospitalization required Moderate adverse reactions possible; manageable without hospitalization Severe adverse reactions possible; hospitalization for 3–4 days may be required Very severe to life-threatening adverse reactions possible; hospitalization for ≥5 days may be required
3. Survival benefit (vs. standard of care) No additional survival benefit Survival benefit of approximately 1 additional month Survival benefit of approximately 2 additional months Survival benefit of approximately 3 additional months