Table 3.

Themes of interest.

Codes	Frequency	Reference Number
Biosensor Characteristics
Portable	11	[11,22,23,24,25,30,33,34,35,38,40]
Remote/Hands-off	7	[11,24,25,26,28,36,38]
On-site analysis (no separate lab test needed)	12	[11,22,23,24,26,27,28,29,34,35,36,40]
Continuously gathering data/longitudinal data collection	7	[11,24,25,27,28,31,38]
Easy to use without extensive technical knowledge, time or money involved	9	[21,22,24,27,30,32,37,38,40]
Comparison to Current Methods
More Rapid than conventional data collection methods	8	[11,23,26,32,33,34,35,39]
Less Rapid than conventional data collection methods	None mentioned	n/a
Higher user acceptability/less invasive	7	[22,23,24,25,26,27,38]
Less user acceptability due to obstruction of their daily behaviors, feeling discomfort from being surveyed, etc.	1	[26]
Low Cost	14	[11,21,23,24,25,30,31,32,33,34,35,37,38,39]
High Cost	None mentioned	n/a