Table 2.

Factors impacting data quality.

User-Related Factors	Amount	Device and Technical Related Factors	Amount
User non-wear	7	Lost bluetooth/network connection	10
Non-wear during battery charging	5	Device Malfunction	8
Misplacement of device on body	5	Low-cost sensors	7
Discomfort of wearing the device	3	Proprietary algorithm or system	6
Forget to wear	2	Software issues	6
Unsatisfied with device appearance	2	Delay in data sync	4
Device not synced by users	1	Quality (accuracy) of algorithm	3