TEST-RETEST RELIABILITY OF THE SENSORY ORGANIZATION TEST IN NONINSTITUTIONALIZED OLDER ADULTS

The purpose of this study was to determine the 1-week test-retest reli ability of the Sensory Organization Test (SOT), using computer-generat ed scores and loss of balance (LOB) episodes in noninstitutionalized o lder adults. The SOT was administered to each subject on two separate days 1 week apart in an out-patient clinic. A volunteer sample of 40 i ndividuals who were at least 65 years of age participated in this stud y. The main outcome measures were computer-generated scores for the fi rst trial and the average of the three trials in each of the six senso ry conditions of the SOT; computer-generated composite score of the si x conditions; LOB on the first trial and any of three trials in each c ondition. The intraclass correlation coefficients (ICC) for the SOT fi rst trial data ranged from .15 in Condition 3 to 0.70 in Condition 5. The ICCs for the SOT average of three trials ranged from 0.26 in Condi tion 3 to 0.68 and 0.64 in Conditions 5 and 6. Percent agreement was 7 7% to 100% for LOB on the first trial, as well as LOB on any of three trials of Conditions 1 through 6. As the conditions became more diffic ult, an increasing number of subjects experienced LOB. Analysis reveal ed fair to good test-retest reliability for computer-generated scores and good reliability for LOB across some conditions of the SOT. A modi fication to the current scoring system is suggested which would improv e the reliability of the computer-generated scores of the SOT. (C) 199 5 by the American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and Rehabilitation