No change in physician dictation patterns when visit notes are made available online for patients

To determine whether physicians document office visits differently when they know their patients have easy, online access to visit notes.

We conducted a natural experiment with a pre-post design and a nonrandomized control group. The setting was a multispecialty group practice in Minnesota. We reviewed a total of 400 visit notes: 100 each for patients seen in a rheumatology department (intervention group) and a pulmonary medicine department (control group) from July 1 to August 30, 2005, before online access to notes, and 100 each for patients seen in these 2 departments 1 year later, from July 1 to August 30, 2006, when only rheumatology patients had online access to visit notes. We measured changes in visit note content related to 9 hypotheses for increased patient understanding and 5 for decreased frank or judgmental language.

Changes occurred for 2 of the 9 hypotheses related to patient understanding, both in an unpredicted direction. The proportion of acronyms or abbreviations increased more in the notes of rheumatologists than of pulmonologists (0.6% vs 0.1%; P=.01), whereas the proportion of anatomy understood decreased more in the notes of rheumatologists than of pulmonologists (-5.9% vs -0.8%; P=.02). One change (of 5 possible) occurred related to the use of frank or judgmental terms. Mentions of mental health status decreased in rheumatology notes and increased in pulmonology notes (-8% vs 7%; P=.02).

Dictation patterns appear relatively stable over time with or without online patient access to visit notes.