Table 2.

Scoring for invasiveness of modalities and vulnerability of subject groups.

Invasiveness physiological modality			Vulnerability subject group
Drastic	0	Not drastic or privacy invading	Communicative capability	0	Limited non-verbal and not verbal
	1	Mildly drastic		1	Limited verbal
	2	Moderately drastic		2	Both verbal and non-verbal
	3	Very drastic or privacy invading	Competence	0	No or very little competence
Duration	0	Up to 1 hour		1	Limited competence
	1	From 1 up to several hours		2	Normative competence
	2	From several hours up to 1 day	Illness	0	Illness, injury, or disability
	3	More than 1 day		1	No illness, injury, or disability