Table 2.

Secondary analysis of HbA1c (%) for patients with levels recorded within the year before the trial and within the year of the trial itself

	Control group mean (standard deviation) (n = 191)		Intervention group mean (standard deviation) (n = 266)		Difference in mean HbA1c during trial (95% confidence interval)
	Before trial	During trial	Before trial	During trial	Unadjusted	Adjusted*
Mean HbA1c	8.41 (1.64)	8.38 (1.60)	8.38 (1.68)	8.15 (1.49)	-0.26	-0.30
					(-0.60, 0.07)	(-0.52, -0.07)
					p = 0.125	p = 0.009

*Adjusted for age; sex; last recorded HbA1c, blood pressure, cholesterol quartile and BMI quartile; site (Cornwall, Kent or Newham); smoking status; co-morbid ischemic heart disease; and diabetes management (insulin or non-insulin).