OROPHARYNGEAL SWALLOW EFFICIENCY AS A REPRESENTATIVE MEASURE OF SWALLOWING FUNCTION

The purpose of this investigation was to correlate oropharyngeal swall ow efficiency (OPSE), a summary measure of swallowing function, with i ts component variables. Videofluorographic assessment of oropharyngeal swallow resulted in the measurement of multiple measures of swallow f unction in five patient populations and a group of normal volunteers. In total, 759 swallows were studied in 149 persons. Specific dimension s of impairment were identified in the patient groups. Multiple regres sion analyses were used to relate multiple component variables to OPSE . In patient groups with distinct swallow impairments, OPSE was shown to be representative of the dimensions of impairment. In patient group s with limited impairment and in normal volunteers, the strongest corr elates of OPSE were bolus transit times. In all groups, at least four variables were significantly related to OPSE and the squared multiple correlation coefficients ranged from 76% to 89%. We conclude that orop haryngeal swallow efficiency is a representative summary measure of sw allowing function across populations characterized by a wide range of swallowing impairment.