School of Social Work and the Center for Health Innovation;
Adelphi University;
Garden City;
NY;
USA;
Center for the Psychosocial Study of Health & Illness;
Columbia University;
New York;
NY;
USA;
Mean; Centering; Multicollinearity; Moderated; Regression; Statistical; Interaction; Effect; Modifier; Residual; Centering; Symptom; Cluster; Sickness; Behavior; Malaise; Cancer;