Independent Wheelchair Transfers in the Built Environment: How Transfer Setup Impacts Performance Phase 2: Final Report

Addendum F: Relative Height Differences

Relative heights were calculated for high and low transfers for all three protocols. Refer to Addendum A for the definition of relative height. The following tables F1-F3 represent the data for the three protocols.

Table F1. Relative Height Difference for High and Low Transfers for Protocol A.

For protocol A, it can be seen that the majority of subjects (e.g. 5th percentile or about 95%) can transfer less than half an inch above their WMD seat height for both the high and low transfers. This number increases to 5 inches for high transfers and 7.75 inches for low transfers for the 50th percentile.

Table F2. Relative Seat Height Difference for High and Low Transfers for Protocol B.

For protocol B, the majority of subjects (e.g. 5th percentile, or approximately 95%) were able to transfer 0.325 inches above and 1.3 inches below their WMD seat height, while the 50th percentile was able to transfer 6.375 inches higher and 9 inches lower than their WMD seat height.

Table F3. Relative Seat Height Difference for High and Low Transfers for Protocol C.

Protocol C follows a similar trend to protocol B. The majority of subjects (5th percentile or about 95%) were able to transfer 0.325 inches higher and 1.5 inches lower than their WMD seat.