Table 3.
Clinic BP figures, BP control, antihypertensive medication adherence and knowledge about hypertension (baseline, end of the study and ITT analysis)
| Variable | Control group | Intervention group | P value |
|---|---|---|---|
| Baseline | (n = 99) | (n = 98) | |
| Baseline SBP, mean (SD), mmHg | 141.9 (16.8) | 141.6 (16.3) | 0.873 |
| Baseline DBP, mean (SD), mmHg | 86.4 (11.7) | 85.2 (10.2) | 0.438 |
| Baseline BP control, n (%) | 35 (35.4) | 30 (30.6) | 0.480 |
| Baseline stage 1 HT, n (%) | 39 (39.4) | 43 (43.9) | 0.522 |
| Baseline stage 2 HT, n (%) | 22 (22.2) | 20 (20.4) | 0.752 |
| Baseline low medication adherence, n (%) | 50 (50.5) | 52 (53.1) | 0.718 |
| Knowledge of target BP values, n (%) | 59 (59.6) | 58 (59.2) | 1.000 |
| Knowledge of hypertension risks, n (%) | 54 (54.5) | 54 (55.1) | 0.920 |
| End of the study | (n = 96) | (n = 94) | |
| End SBP, mean (SD), mmHg | 141.1 (18.0) | 134.0 (16.0) | 0.005 |
| End DBP, mean (SD), mmHg | 85.3 (8.9) | 82.2 (8.7) | 0.016 |
| End BP control, n (%) | 40 (41.7) | 62 (66.0) | 0.0008 |
| End low medication adherence, n (%) | 42 (43.8) | 21 (22.3) | 0.0017 |
| Knowledge of target BP values, n (%) | 61 (63.5) | 77 (81.9) | 0.005 |
| Knowledge of hypertension risks, n (%) | 63 (65.6) | 79 (84.0) | 0.003 |
| ITT analysis | (n = 99) | (n = 98) | |
| ITT SBP (includes last value carried forward), mean (SD), mmHg | 141.0 (18.0) | 134.2 (16.0) | 0.006 |
| ITT DBP (includes last value carried forward), mean (SD), mmHg | 85.4 (9.1) | 82.5 (8.6) | 0.020 |
| ITT BP controla, n (%) | 43 (43.4) | 62 (63.3) | 0.005 |
| ITT low medication adherenceb, n (%) | 42 (42.4) | 25 (25.5) | 0.012 |
| ITT knowledge of target BP valuesb, n (%) | 64 (64.6) | 77 (78.6) | 0.030 |
| ITT knowledge of hypertension risksb, n (%) | 66 (66.7) | 79 (80.6) | 0.026 |
Bold means that there is a statistically significant difference (P value < 0.05)
aAdmitting that all patients from control group lost to follow-up had their BP controlled at the end of the 9-month study and that all patients from intervention group lost to follow-up had their BP uncontrolled at the end of the 9-month study
bAdmitting that all patients from control group lost to follow-up were adherent and knew target BP values and hypertension risks at the end of the 9-month study and that all patients from intervention group lost to follow-up were no adherent and did not known target BP values and hypertension risks at the end of the 9-month study
BP blood pressure, DBP diastolic blood pressure, HT hypertension, ITT intention-to-treat, SBP systolic blood pressure, SD standard deviation