A new survey by Manhattan Research reveals that 75 percent of physicians in the United States have purchased an Apple mobile device such as an iPad, iPhone or iPod. The firm has completed its "Taking the Pulse U.S. 11.0" survey, an annual report that examines how physicians are using technology. It studies physicians' use of the Web, mobile devices and other technology tools. For the survey, Manhattan Research interviewed 2,041 U.S. doctors in the first quarter of 2011 on the phone or online. The company organized data among specialists such as primary care physicians, cardiologists, oncologists and pediatricians. Researchers used back-end software to avoid overlap and ensure unique responses. Announced on May 4, the study found that the iPhone was doctors' favored smartphone platform."Obviously, it speaks to the popularity of Apple among physicians," James Avallone senior digital health care analyst for Manhattan Research, told eWEEK.