Table 3

Coach feedback and coach–participant messages at 12 months summarized using mean (SD)

Coach–participant interactionsAll participants*
n=1355		Highly engaged†
n=640		Minimally engaged‡
n=715		P valueWL <5%WL 5% to <7%WL 7% to <10%WL ≥10%P value
n1355 (100%)640 (47%)715 (53%)771 (57%)161 (12%)163 (12%)260 (19%)
Number of food log feedback/week1.1 (0.8)1.4 (0.9)0.9 (0.7)<0.0011.1 (0.8)1.2 (0.9)1.4 (0.9)1.2 (0.8)<0.001
Number of food log feedback days/week0.6 (0.4)0.8 (0.4)0.5 (0.3)<0.0010.6 (0.4)0.7 (0.4)0.8 (0.4)0.7 (0.3)<0.001
Number of exercise feedback/week0.4 (0.3)0.4 (0.3)0.3 (0.3)<0.0010.3 (0.3)0.4 (0.3)0.4 (0.3)0.4 (0.3)<0.001
Number of exercise feedback days/week0.3 (0.2)0.3 (0.2)0.2 (0.2)<0.0010.3 (0.2)0.3 (0.2)0.3 (0.2)0.3 (0.2)0.001
Number of coach message/week2.5 (1.4)3.0 (1.4)2.1 (1.2)<0.0012.4 (1.3)2.8 (1.3)3.0 (1.4)2.8 (1.5)0.013
Number of coach message days/week1.4 (0.6)1.6 (0.5)1.3 (0.6)<0.0011.4 (0.6)1.6 (0.5)1.6 (0.5)1.5 (0.5)<0.001
Number of participant messages/week1.4 (1.3)1.8 (1.6)1.1 (0.8)<0.0011.3 (1.3)1.5 (1.0)1.8 (1.4)1.6 (1.6)<0.001
Number of participant message days/week0.9 (0.6)1.1 (0.7)0.7 (0.5)<0.0010.9 (0.6)1.0 (0.53)1.1 (0.6)1.0 (0.7)<0.001
Number of participant community messages/week0.1 (0.1)0.1 (0.1)0.0 (0.1)<0.0010.1 (0.1)0.1 (0.1)0.1 (0.2)0.1 (0.1)<0.001

  • *All participants: any participant enrolled in Livongo DPP who attended lesson 1 and provided a starting weight.

  • †Highly engaged participants: participants who met the CDC high-engagement criteria by completing nine lessons within months 1–6 of the program and three lessons within months 7–12 of the program with a minimum of 9 months between first and final lessons completed.21

  • ‡Minimally engaged participants: all participants not meeting the CDC high-engagement criteria.21

  • CDC, Centers for Disease Control and Prevention; DPP, diabetes prevention program; WL, weight loss.