While health-care costs may be paramount in big data’s rise, clinical trends also play a role. Physicians have traditionally used their judgment when making treatment decisions, but in the last few years there has been a move toward evidence-based medicine, which involves systematically reviewing clinical data and making treatment decisions based on the best available information. Aggregating individual data sets into big-data algorithms often provides the most robust evidence, since nuances in subpopulations (such as the presence of patients with gluten allergies) may be so rare that they are not readily apparent in small samples.
I found another report on Big Data and healthcare, this time from McKinsey and Company. This report leans in the direction of favoring technology over the personal interactions between patient and physician. I'm still feeling divided. This link goes to an executive summary, but it has a link where you can download the full report.