The AAFP concludes that the evidence is insufficient to recommend for or against routine use of brief, formal screening instruments in primary care to detect speech and language delay in children up to 5 years of age. (2006)
(Grade: I recommendation)
Grade Definition: http://www.uspreventiveservicestaskforce.org/uspstf/grades.htm
Clinical Considerations: http://www.uspreventiveservicestaskforce.org/uspstf/uspschdv.htm