Table 4.

Significant comparative reduction of glycated hemoglobin A_1c by intervention features.

Intervention feature			RCTsa (n=23), n (%)		Significant resultsb, n/N (%)
Communication mode
	Synchronous	12 (52)		4/12 (33)
	Asynchronous	11 (48)		8/11 (73)
Frequency of communications
	Unlimited	7 (30)		4/7 (57)
	Restricted	16 (70)		8/16 (50)
Qualification of coaches
	Diabetes specialists	11 (48)		6/11 (55)
	General HCPsc	12 (52)		6/12 (50)

^aRCT: randomized controlled trial.

^bNumber of studies achieving statistically significant results in comparative reduction of glycated hemoglobin A_1c.

^cHCP: health care professional.