Although several investigators have studied family interaction during times of illness and family participation in rehabilitation, a literature search found nothing about the relation between patient perception of family health and functional outcomes in rehabilitation. The purpose of this study was to determine whether there is such a relationship. The Functional Independence Measure (FIM), designed to measure functional gain in rehabilitation, and the FAMTOOL, designed to measure family health in any healthcare setting, were used to collect data from 100 adult patients at two inpatient rehabilitation centers. A Pearson product moment correlation showed no relation between FAMTOOL scores and FIM gain scores (gain between admission and discharge FIMs). Suggestions are made for further research.