Table 3.

Selection of codes, counts, and definitions related to the challenges faced by participants.

Factor	Challenge codes	Definitions
Person	General health limitations	Constraints caused by health or physical problems that were not specific to motor, visual, or auditory limitations.
	Mobility limitations	Specific comments related to mobility challenges or mobility abilities/limitations including gross motor movement, fine motor movement, balance.
	Physical strength/endurance limitations	The source of the challenge is a lack of strength; objects/tools/bodyweight too heavy/participant not strong enough to complete the task, or struggle with the task because of a lack of physical strength (upper/lower body strength). The source of challenge may also be exhaustion, fatigue, lack of energy, or lack of endurance.
Environment	Physical access	Access to buildings, private or public spaces, the living/built environment, and any other place a person might need or want to go for work, play, education, etc. Physical access includes accessible routes, curb ramps, parking, passenger loading zones, etc. Also, it includes access to things that are physically out of reach (too high, too far).
	Transferring	The act of transferring: in and out of the shower, on and off the toilet, in and out of bed is the source of the challenge.