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Survey methods 1

• The National Library of Medicine developed a 21-question survey.

• MedlinePlus users had a 1 in 56 chance of being asked to take the survey. MedlinePlus en español users had a 1 in 12 chance from 2/19 to 3/5/03 and a 1 in 3 chance from 3/13 to 4/11/03 of being asked to take the survey.

• 12,167 visitors completed the survey.

• Fulcrum Analytics provided contract support for the survey implementation.