Table 1.

Population, Intervention, Control, Outcome, and Time and eligibility criteria.

Population, Intervention, Control, Outcome, and Time criteria	Eligibility
	Inclusion	Exclusion
Population	Humans; only studies addressing at least one of the predetermined target diseases within their initial search	Studies addressing chronic diseases in general, other than the three diseases defined, or not addressing any disease at all; specific populations (pregnant women and ethnical minorities); and animals
Intervention	Primary studies applying telemedicine intervention specified as (1) using ICTsa, (2) covering distance, and (3) involving a health care provider for delivering care to the patient	Studies focusing solely on monitoring or data storage and exchange tools (such as electronic health records)
Control	Usual care	No control group available or not specified
Outcome	Effectiveness analyses allowing for quantitative comparisons between groups using clinical parameters (primary outcome HbA1cb, SBPc, DBPd, HDL-ce, LDL-cf, TCg, and TGCh)	Studies primarily investigating mortality, costs or cost-effectiveness, or feasibility; or efficacy
Time	Follow-up time of at least three months	No or shorter follow-up periods described
Study design	Study design being either a systematic review or meta-analysis of randomized controlled trials	Other, including a systematic review or meta-analysis of observational studies

^aICT: information and communication technology.

^bHbA_1c: glycated hemoglobin.

^cSBP: systolic blood pressure.

^dDBP: diastolic blood pressure.

^eHDL-c: high-density lipoprotein cholesterol.

^fLDL-c: low-density lipoprotein cholesterol.

^gTC: total cholesterol.

^hTGC: triglycerides.