Table 2.

Do Changes (Δ) in Barrier Scores During Each Month of the Intervention Predict Change in HbA1c From Baseline to 3-Month Follow-Up Assessment Among Participants Who Completed Each Assessment (n = 18)?

	Model 1 Δ in barrier scores each month		Model 2 Model 1 adjusted for baseline HbA1c
Outcome: Δ in HbA1c	Coeff	Robust SEa	Coeff	Robust SEa
Month 1 Δ in barrier scores	.018	.019	.037	.020
Month 2 Δ in barrier scores	.068**	.022	.081**	.024
Month 3 Δ in barrier scores	.048*	.022	.048†	.025
Baseline HbA1c	—	—	.049	.038

^aRobust standard errors allow for intragroup correlation (ie, 3 barriers for each participant, each month) using Stata option cluster. Among the 18 participants who completed all assessments, the average change in HbA1c was −0.22 ± 1.28%.

Boldface indicates statistical significance. ^†P < .07. *P < .05. **P < .01.