Table 2.

The health domains and corresponding categories of the selected self-quantification (SQ) tools. The numbers from 1 to 8 indicate the SQ tool or service we analyzed. “X” indicates the SQ tool or service’s functionality to capture this type of measurement.

Domain name	CDA-SQSa		SQS
Health domain	Category	Subcategory	1	2	3	4	5	6	7	8
Body functions	Mental functions	Sleep	X	X
	Mental functions	Emotions				X
	Cardiovascular system	Blood pressure			X
	Endocrine system	Blood glucose					X
Body structures	Cell structure	Genes, deoxyribonucleic acid, etc							X
	Microbial structure in skin, gut, etc	Names, number, types, etc								X
Body actions and activities	Mobility	Walking		X
Around the body	Natural environment	Climate or weather						X

^aCDA-SQS: Classification of data and activity in self-quantification systems.