| SD all day DBP | Normal (Group 1) | Abnormal (Group 2) | χ2 | P-value | ||
| Gender | Male | No. | 26 | 40 | 3.998 | 0.046* |
| % | 48.1% | 66.7% | ||||
| Female | No. | 28 | 20 | |||
| % | 51.9% | 33.3% | ||||