Instrumentation
The data set previously entered in Research Electronic Data Capture system (REDCap)30,31 was used to examine cross-sectional relationships between demographic variables and study outcomes at baseline. Variables included QOL questionnaires, the Faces Scale, as well as physical posture measurements with an inclinometer. Demographic data included in the data base were sex, age, race/ethnicity, type of cancer, type of cancer treatment, educational level of parents, and zip code.