Table 1.

Quality Assessment of Diagnostic Accuracy Studies-2 criteria used for qualitative assessment description.

Patient selection	Index test	Reference standard	Flow and timing
Signaling question 1: Data preprocessing specified?	Signaling question 1: Data acquisition methods detailed?	Signaling question 1: Is the reference standard likely to correctly classify the target condition?	Signaling question 1: Was there an appropriate interval between index tests and reference standard?
Signaling question 2: At least 50 participants were selected for analysis	Signaling question 2: BGa-level forecasting or prediction approach detailed? That is, network architecture provided or MLb models parameters?	Signaling question 2: Were the reference standard results interpreted without knowledge of the results of the index test?	Signaling question 2: Did all patients receive a reference standard?
Signaling question 3: Balance of number of participants within the subgroups (ie, diabetic or nondiabetic, male or female, healthy or some disease)	Signaling question 3: More than one performance metrics used	Signaling question 3: Sufficient detail to allow replication about definition of ground truth (Was the method described in sufficient detail to reproduce the presented results?)

^aBG: blood glucose.

^bML: machine learning.