Stair Mobility

Absent Stair Mobility

Expressions activating this band do not show a coherent stair- or step-related mobility experience and instead contain unrelated content. This band functions as absence of the proxy rather than a meaningful floor form of stair negotiation.

Limited Stair Mobility

Expressions activating this band describe basic stair and step negotiation as effortful, symptom-limited, or only manageable under ordinary conditions. They often involve short distances, use of supports, or difficulty with stairs, escalators, and similar everyday demands.

Moderate Stair Mobility

Expressions activating this band describe the ability to manage steps and stairs with some retained difficulty or caution, including balance concerns and reduced confidence in more demanding situations. The experience includes functional stair use but with noticeable constraints.

Basic Stair Mobility

Expressions activating this band describe minimal but definite capacity to ascend a step or make upward movement on stepped surfaces. The experience is concrete and restricted to simple, immediate stair negotiation.

Advanced Stair Mobility

Expressions activating this band describe fluent movement across multiple steps, stairs, ladders, or staged vertical progressions. The experience reflects strong functional capacity for sustained upward and downward negotiation of stepped environments.

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