Table 1 Secondary outcomes: definitions and measurement techniques
Secondary outcomes recorded at baseline and follow-up | Definitions and measurements |
|---|---|
Systolic blood pressure (SBP) | Mean difference in mean SBP between baseline and follow-up: the research nurse will be trained to measure blood pressure using the current British Hypertensive Society (BHS) guidelines. Specifically, the nurse will initially measure blood pressure in both arms, and then take the mean of three measurements from the arm with the highest initial diastolic reading. All measurements will be taken one minute apart after initial rest of five minutes. Blood pressure will be measured using an Omron I-C10 (HEM 7070) arm monitor if arm circumference is 17 inches or less or an Omron R7 (HEM 637) wrist monitor if arm circumference is greater than 17 inches. These devices have been independently validated [12]. |
Diastolic blood pressure (SBP) | Mean difference in mean DBP between baseline and follow-up: the research nurse will be trained to measure blood pressure using the current BHS guidelines. Specifically, the nurse will initially measure blood pressure in both arms, and then take the mean of three measurements from the arm with the highest initial diastolic reading. All measurements will be taken one minute apart after initial rest of five minutes. Blood pressure will be measured using an Omron I-C10 (HEM 7070) arm monitor if arm circumference is 17 inches or less or an Omron R7 (HEM 637) wrist monitor if arm circumference is greater than 17 inches. These devices have been independently validated [12]. |
Resting heart rate | Four readings will be recorded for resting heart rate from the automated devices used to measure blood pressure as described above. The first reading will be ignored and the mean resting heart rate will be calculated as mean of the last three readings. |
Body mass index (BMI) | Height in cm and weight in kg will be recorded. BMI will be calculated as weight in kg/(height in cm) [2]. |
Psychological evaluation | a. Mental health score will be assessed using the HADS depression scale. |
b. Quality of life will be assessed using the EQ-5D and the EQ-VAS. |