| Measuring blood pressure at home | X2 Test | |||
| Understanding of prescribed medications | Yes | No | ||
| Yes | Frequency (%) | 101 (86.3%) | 19 (57.6%) | P = 0.000 |
| Adjusted residual | 3.6 | −3.6 | ||
| No | Frequency (%) | 16 (13.7%) | 14 (42.4%) | |
| Adjusted residual | −3.6 | 3.6 | ||
| Consulting with physicians or nurses | X2 Test | |||
| Understanding of prescribed medications | Yes | No | ||
| Yes | Frequency (%) | 108 (82.4%) | 11 (61.1%) | P = 0.034 |
| Adjusted residual | 2.1 | −2.1 | ||
| No | Frequency (%) | 23 (17.6%) | 7 (38.9%) | |
| Adjusted residual | −2.1 | 2.1 | ||