At the time the OCAIRS was created in 1994, psychometric testing found interrater reliability of the fourteen items in the original OCAIRS using an intraclass correlation coefficient for items which ranged from 0.318 to 0.812.
Concurrent validity was established between the OCAIRS and the Assessment of Occupational Functioning, another measure designed to measure occupational participation, and based on MOHO, with a high correlation of r = 0.86 .
The nonparametric Spearman rank order correlation was used to examine the relationship between the OCAIRS V4 and the RCV2: QP.
In order to investigate whether there was an effect on days-since-transplant on scores on either the RCV2: QP or the OCAIRS V2, a Spearman rank order correlation was calculated for each.
This pilot study aimed to establish concurrent validity of the RCV2: QP and the OCAIRS V4 by determining if they measure occupational participation as defined by MOHO, in post-liver-transplant patients.
With the knowledge that the RCV2: QP produces similar results as the more time intensive OCAIRS V4, occupational therapy practitioners will now be able to quickly determine how patients are progressing in their pursuit to occupy desired roles.
A concern worth addressing is the two fair and moderate ICC values from the OCAIRS. These values are for component score: physical environment (r = 0.59) and feedback (r = 0.40), Global Assessment: system trajectory (r = 0.32), and historical (r = 0.57).
Although we recognize the differences between the general RCV2: QP and the more detailed OCAIRS V4, both instruments measure occupational participation.