Table 1.
Baseline characteristics for full dataset and for participants not providing primary outcome data. Values are numbers (percentages) unless stated otherwise
| Variables | Primary outcome data provided | Primary outcome data not provided | |||
|---|---|---|---|---|---|
| Monitored group (n=200) | Usual care group (n=201) | Monitored group (n=18) | Usual care group (n-24) | ||
| Mean (SD) age (years) | 60.5 (11.8) | 60.8 (10.7) | 60.6 (11.5) | 57.3 (12.8) | |
| Men | 117 (59) | 120 (60) | 9 (50) | 12 (50) | |
| History of blood pressure self monitoring: | |||||
| Never | 128 (64) | 126 (63) | 13 (72) | 16 (67) | |
| Occasionally | 56 (28) | 56 (28) | 4 (22) | 5 (21) | |
| Regularly | 16 (8) | 19 (9) | 1 (6) | 3 (13) | |
| Mean (SD) body mass index (kg/m2) | 30.1 (5.7) | 30.2 (6.2) | 31.5 (5.6) | 30.7 (7.0) | |
| Smoker | 23 (12) | 20 (10) | 2 (11) | 3 (13) | |
| Mean (SD) No of cigarettes/day | 17.6 (9.2) | 14.9 (10.4) | 13.5 (9.2) | 32.5 (10.6) | |
| Non-smoker | 177 (89) | 181 (90) | 16 (89) | 21 (88) | |
| Consumes alcohol | 158 (79) | 159 (79) | 12 (67) | 17 (71) | |
| Median (interquartile range) units of alcohol (10 mL)/day | 1.7 (0.9-2.9) | 2.0 (0.7-4.0) | 1.5 (0.8-2.5) | 1.3 (0.6-3.4) | |
| Does not consume alcohol | 37 (19) | 41 (20) | 4 (22) | 7 (29) | |
| Missing data | 5 | 1 | 2 | 1 | |
| Exhaled carbon monoxide category (parts per million): | |||||
| Non-smoker (1-6) | 177 (89) | 179 (89) | 16 (89) | 20 (83) | |
| Light smoker (7-10) | 0 (0) | 3 (1) | 0 (0) | 0 (0) | |
| Moderate smoker (11-20) | 8 (4) | 11 (5) | 1 (6) | 2 (8) | |
| Heavy smoker (≥20) | 15 (8) | 8 (4) | 1 (6) | 2 (8) | |
| Mean (SD) cholesterol level (mmol/L) | 5.5 (1.0) | 5.3 (1.0) | 5.5 (0.7) | 5.7 (1.3) | |
| Missing data | 5 | 8 | 0 | 1 | |
| Mean (SD) haemoglobin A1c level (mmol/mol) | 38.0 (6.3) | 37.7 (5.1) | 37.3 (4.9) | 39.5 (9.2) | |
| Missing data | 7 | 9 | 0 | 1 | |
| Mean (SD) urinary sodium:creatinine ratio | 9.7 (5.4) | 10.9 (8.7) | 10.7 (6.9) | 9.1 (6.7) | |
| Missing data | 4 | 2 | 0 | 0 | |
| Mean (SD) surgery measured blood pressure (mm Hg): | |||||
| Systolic | 152.9 (15.1) | 152.4 (14.3) | 153.8 (15.5) | 152.9 (13.6) | |
| Diastolic | 92.1 (11.5) | 89.9 (11.3) | 89.7 (11.6) | 89.5 (10.1) | |
| Mean (SD) daytime ambulatory blood pressure (mm Hg): | |||||
| Systolic | 146.2 (10.6) | 146.2 (10.5) | 147.8 (11.7) | 144.4 (9.0) | |
| Diastolic | 87.1 (10.0) | 85.4 (9.6) | 83.6 (8.7) | 83.5 (9.1) | |
| Hospital anxiety and depression scale32: | |||||
| Mean (SD) anxiety score | 5.0 (2.9) | 5.1 (3.6) | 5.7 (2.9) | 6.1 (3.8) | |
| Mean (SD) depression score | 2.8 (2.4) | 2.9 (2.5) | 3.2 (2.6) | 3.6 (2.6) | |
| Missing data | 2 | 2 | 0 | 0 | |
| Mean (SD) exercise tolerance score48 | 7.8 (2.9) | 7.6 (3.0) | |||
| Missing data | 1 | 2 | |||
| Mean (SD) Stanford self efficacy questionnaire (short version)49 | 8.7 (1.4) | 8.5 (1.4) | |||
| Missing data | 6 | 1 | |||
| Morisky medication adherence scale50: | |||||
| Sometimes forgets to take drugs | 61 (31) | 63 (31) | |||
| Does not forget to take drugs | 132 (66) | 132 (66) | |||
| Missing data | 6 | 7 | |||
| Sometimes careless about taking drugs | 24 (12) | 23 (11) | |||
| Not careless about taking drugs | 169 (85) | 173 (86) | |||
| Missing data | 5 | 7 | |||
| Sometimes stops taking drugs when feeling better | 11 (6) | 15 (7) | |||
| Does not stop taking drugs when feeling better | 181 (91) | 180 (90) | |||
| Missing data | 6 | 8 | |||
| Sometimes stops taking drugs when feeling worse | 18 (9) | 22 (11) | |||
| Does not stop taking drugs when feeling worse | 170 (85) | 173 (86) | |||
| Missing data | 6 | 12 | |||
| Median (interquartile range) No of defined daily doses of hypertensive drugs | 1.5 (1-3) | 1.7 (1-3) | |||
| Mean (SD) EuroQol-5D22 | 0.875 (0.177) | 0.857 (0.220) | |||
| Missing data | 5 | 6 | |||