Table 1.
Comparative analysis of clinical and sleep parameters stratified by hypertension status.
| Variables | Total | Without hypertension | With hypertension | p value |
|---|---|---|---|---|
| Participates, n | 759 | 308 | 451 | |
| Age, years | 65.83 ± 10.40 | 65.30 ± 10.88 | 66.20 ± 10.07 | 0.247 |
| Gender | ||||
| Men, n (%) | 276 (36.4) | 107 (34.7) | 169 (37.4) | 0.091 |
| Women, n (%) | 483 (63.6) | 201 (65.3) | 282 (62.5) | |
| BMI, kg/m2 | 23.96 ± 2.86 | 23.96 ± 2.86 | 25.21 ± 3.47 | <0.001 |
| WC, cm | 83.63 ± 9.08 | 81.60 ± 8.22 | 85.21 ± 9.41 | <0.001 |
| WHpR | 0.90 ± 0.08 | 0.89 ± 0.77 | 0.91 ± 0.76 | <0.001 |
| WHtR | 0.54 ± 0.06 | 0.53 ± 0.57 | 0.55 ± 0.63 | <0.001 |
| Blood pressure | ||||
| Systolic | 138.42 ± 18.99 | 123.40 ± 10.14 | 148.67 ± 16.66 | <0.001 |
| Diastilic | 78.13 ± 10.19 | 74.30 ± 7.51 | 80.75 ± 10.93 | <0.001 |
| Monitoring times, nights | 1,459 | |||
| One night, n (%) | 166 (21.9) | |||
| Two nights, n (%) | 525 (69.2) | |||
| ≥3 nights, n (%) | 68 (9.0) | |||
| SPT, hours | 7.75 ± 1.60 | 7.85 ± 1.46 | 7.68 ± 1.69 | 0.146 |
| <6, n (%) | 102 | 39 (38.2) | 63 (61.8) | <0.001 |
| 6–7, n (%) | 118 | 61 (51.7) | 57 (48.3) | |
| 7–8, n (%) | 159 | 88 (55.3) | 71 (44.7) | |
| 8–9, n (%) | 223 | 120 (53.8) | 103 (46.2) | |
| >9, n (%) | 157 | 73 (46.5) | 84 (53.5) | |
| TST, hours | 5.92 ± 1.65 | 5.85 ± 1.60 | 5.97 ± 1.69 | 0.321 |
| <4, n (%) | 108 | 52 (48.1) | 56 (51.9) | <0.001 |
| 4–5, n (%) | 103 | 49 (47.6) | 54 (52.4) | |
| 5–6, n (%) | 161 | 84 (52.2) | 77 (47.8) | |
| 6–7, n (%) | 165 | 90 (54.5) | 75 (45.5) | |
| 7–8, n (%) | 153 | 79 (51.6) | 74 (48.4) | |
| ≥8, n (%) | 69 | 27 (39.1) | 42 (60.9) | |
| AHI, times/h | 11.00 (5.75, 18.63) | 9.12 (5.40, 17.51) | 12.49 (6.03, 20.07) | 0.039 |
| <5, n (%) | 163 (21.5) | 69 (22.4) | 94 (20.8) | <0.001 |
| 5–15, n (%) | 326 (43.0) | 143 (46.4) | 183 (40.6) | |
| 15–30, n (%) | 192 (25.3) | 73 (23.7) | 119 (26.4) | |
| ≥30, n (%) | 78 (10.3) | 23 (7.5) | 55 (12.2) | |
| SMP, hours | 2.78 ± 0.83 | 2.67 ± 0.81 | 2.86 ± 0.84 | 0.003 |
Data are presented as mean ± standard deviation or median (interquartile range) for continuous variables, and number (percentage) for categorical variables. BMI, body mass index; WC, waist circumference; WHpR, waist-to-hip ratio; WHtR, waist-to-height ratio; SPT, sleep period time; TST, total sleep time; AHI, apnea-hypopnea index; SMP, sleep midpoint. p-values derived from independent t-tests, Mann–Whitney U tests, or χ2 tests as appropriate.