TABLE 2.

Differences at one year of follow-up in clinical outcomes between intervention and usual care groups, adjusted for clustering and for group heterogeneity in cluster and residual variances. Adjusted difference score refers to the difference between intervention and usual care groups adjusted for the baseline value of the variable. Values in parenthesis are actual (unadjusted) differences. ANCOVA refers to analysis of covariance, used to compute a test statistic on the difference between groups at one year adjusted for the baseline value of the variable. Data are shown for subjects who completed the baseline and one-year follow-up examinations.

Outcome Variable	N's for Analysis		Baseline				T-testP-value	One-Year Follow-up				Adjusted Difference Score	ANCOVAP-value
	Usual Care	Intervention	Usual Care		Intervention			Usual Care		Intervention
			Mean	SD	Mean	SD		Mean	SD	Mean	SD
Hemoglobin A1c (%)	685	670	7.42	1.58	7.35	1.41	0.41	7.17	1.40	6.97	1.12	−0.18 (−0.20)	0.006
Hemoglobin A1c (%) in subgroup with A1c ≥7% at baseline	353	352	8.52	1.47	8.35	1.24	0.10	7.78	1.47	7.42	1.19	−0.32 (−0.36)	0.002
Systolic blood pressure (mmHg)	709	697	141.75	23.47	142.13	23.13	0.76	140.62	22.92	137.40	21.24	−3.42 (−3.22)	0.001
Diastolic blood pressure (mmHg)	709	697	70.91	10.47	71.42	11.21	0.37	70.05	11.05	68.44	9.91	−1.94 (−1.61)	<0.001
Total cholesterol (mg/dl)	679	666	184.89	38.56	182.89	37.27	0.33	182.64	41.72	170.70	35.52	−11.06 (−11.94)	<0.001
LDL cholesterol (mg/dl)	678	664	107.97	35.48	106.40	33.54	0.41	105.92	39.62	95.69	31.77	−9.50 (−10.23)	<0.001