Data used to calculate sample size
| Output measure | Standard error of mean difference # | Standard deviation of mean difference | Clinically important difference | Unit of clinical measure | Number of patients required in each group |
|---|---|---|---|---|---|
| HbA1c | 2.28 | 17.5 | 5.5 | mmol/mol | 159 |
| Systolic blood pressure | 2.27 | 12.47 | 3.3 | mm Hg | 224 |
Patients were included in the intention to treat analysis even if they did not complete questionnaires.
HbA1c, glycated haemoglobin.