Depression and mortality: artifact of measurement and analysis?
These data demonstrate a possible association between depression and mortality but detecting this association is dependent on the measurement used and method of analysis. Different findings based on methodology present clear problems for the elucidation and determination of relationships. The differences here argue for the use of validated scales where possible and suggest against over-reduction via factor analysis and grouping.
The data indicate that EGFRvIII does not alter radiosensitivity with or without anti-EGFR treatment.