Journal of Cardiopulmonary Rehabilitation & Prevention
April 2004, Volume 24 Number 2 , p 121 - 127
CONCLUSIONS: There was no significant difference in mean readability levels between urban and rural CR sites in Minnesota. On the average, the readability levels were two grades higher than recommended, with 87.5% of the CR sites expecting patients to learn information from materials too difficult for average American adults. The large number of polysyllabic words appears to be the main culprit for difficult readability levels.