Results from primary outcome variable and statistical test of the hypothesis
The variable "Effect on glycaemic control" was the difference in glycaemic control (HbA1c) at the start of the study from that at the end of the study for both the intervention and control groups. The significance of this "Effect on glycaemic control" was tested (α of 0.05) using the independent-samples two-sided t-test. The result of the statistical test indicated the "Effect on glycaemic control" observed for the study was significant (p = 0.025): the intervention did improve glycaemic control when compared to the control group. From Table Table2,2, glycaemic control worsened for both groups compared to baseline. The change in glycaemic control for the intervention group was a mean increase in HbA1c of 0.52% (SE 0.17) compared to that at baseline. The change in glycaemic control for the control group was a mean increase in HbA1c of 1.09% (SE 0.18) compared to that at baseline. The "Effect on glycaemic control" or the mean difference in change in HbA1c for the intervention from the control group is -0.57% (95%CI 0.07 - 1.07). For all other variables the statistical analysis gave p-values > 0.05.