NM-Score D1: Standing position and transfers
□ 0	No impairment: Walking ability, running and jumping are comparable to their peers.
□ 1	Mild impairment: The individuals can walk (walking distance >500m) in town (sidewalks), in supermarkets and on uneven ground. Many individuals may run and jump but with reduced speed, impaired balance and/or compensatory strategies.
□ 2	Moderate impairment: The individuals can walk over limited distances in the neighborhood, within school or a workplace (walking distance <500m). Very few individuals have the ability to run and jump.
□ 3	Severe impairment: Upright mobility is very limited. Some individuals are able to take a few steps inside the home with an assistive device or another person to assist, but upright mobility is not the primary method of mobility.
□ 4	Very severe impairment: Individuals cannot take any steps or stand up. No transfer of weight to the feet can be achieved to move from seated to standing position.
NM-Score D2: Axial and proximal motor function
□ 0	No impairment: Seated ability, proximal motor function of limbs, and head control are comparable to their peers.
□ 1	Mild impairment: Individuals can stay in an upright, seated position for an unlimited amount of time (all day at school or at work) on a regular seat. Holding a seated position may be qualitatively abnormal due to postural kyphosis or a level of fatigue requiring the support of an upper limb or a chair back. Head control is normal for an unlimited amount of time.
□ 2	Moderate impairment: Individuals can sit without support but for a limited amount of time. Individuals able to sit for unlimited amount of time will be classified in this level of function if: → the individual is unable to lift or carry objects above shoulder level and/or has difficulty carrying and handling of heavy objects and/or → head control is compromised or only possible for short periods of time.
□ 3	Severe impairment: The seated position without support is limited to a few important and purely functional situations (dressing, positioning, donning/doffing a body jacket, sitting on the toilet).
□ 4	Very severe impairment: Individuals cannot sit up unassisted. The seated position is only possible with the use of adaptive equipment.
NM-Score D3: Distal motor function
□ 0	No impairment: Object manipulation and distal motor function are comparable to their peers.
□ 1	Mild impairment: The majority of object manipulation and distal motor function in daily life activities is preserved. Manual activities requiring greater strength are possible but with difficulty, affecting speed, fatigue levels and the need for compensatory movements. Intention tremors or a lack of precision can be the only impairment observed during the activity.
□ 2	Moderate impairment: Object manipulation and distal motor function are limited due to a lack of strength and/or poor control of movement. The individuals cannot perform certain manual activities requiring strength and significant dexterity. Easier manual activities are possible, fully performed but with difficulty, slowness, fatigue or need to compensate. The objects may be modified in order to facilitate their use (large pencil, adapted lids or covers).
□ 3	Severe impairment: Individuals cannot perform manual activities requiring strength and significant dexterity. Object manipulation and distal motor function during easy manual activity may be partially accomplished. In order for these activities to be carried out in full, adaptive equipment or assistance from another person is required.
□ 4	Very severe impairment: The great majority of object manipulation and distal motor function in daily life activities is very difficult or unable to be accomplished.