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Table 4 Missing responses in the demonstration studies. The median proportions of missing responses to task-oriented questions in the national and local demonstration study are shown in this table.

From: Task-oriented evaluation of electronic medical records systems: development and validation of a questionnaire for physicians

Demonstration study Task-oriented questions Median missing responses (range)
National study Frequency of PC use 1.8% (1.4% – 3.2%)
  Use EMR / use other program 21.0% (5.9% – 51.1%)
Local study Frequency of EMR use 0.0% (0.0% – 1.4%)
  Task performance 2.9% (1.4% – 14.3%)