Methodology

• Mail survey

• Sample frame: 5,000 currently practicing physicians randomly selected from the AMA Masterfile

• Proposed sample size: 3,000 physicians

• Field period: Began in July 2007, currently in the field

• Physicians were sent two questionnaires. They were directed to fill out the “physician” instrument and to give the second questionnaire to the person most knowledgeable about the practice characteristics and HIT use.

• Current analysis: N approximately equal to 400

• Target response rate: 60%