TABLE 1.
Demographic, sleep, respiratory, anxiety and depression data in sleep apnoea patients versus controls at baseline
| Controls | Apnoeics | p-value | |
|---|---|---|---|
| Subjects n | 37 | 35 | |
| Age years | 53.27±5.94 | 55.54±6.59 | 0.13 |
| BMI kg·m−2 | 27.25±3.64 | 28.52±3.40 | 0.13 |
| Blood pressure mmHg | |||
| Systolic | 122.76±13.67 | 128.26±15.43 | 0.11 |
| Diastolic | 74.95±7.81 | 77.17±10.19 | 0.30 |
| Hypertension# % | 18.9 | 31.4 | 0.17 |
| AHI event·h−1 | 2.30±1.92 | 38.52±21.64 | <0.01 |
| Minimum SaO2 | 90.30±4.59 | 82.06±6.62 | <0.01 |
| Sleep latency min | 16.05±10.47 | 16.57±8.96 | 0.82 |
| WASO min | 58.84±33.20 | 99.99±53.13 | <0.01 |
| TST min | 406.76±36.27 | 364.29±53.85 | <0.01 |
| TST % | 84.48±7.68 | 75.78±11.32 | <0.01 |
| N1 % | 12.53±4.50 | 18.42±8.73 | <0.01 |
| N2 % | 62.04±9.14 | 54.92±12.49 | <0.01 |
| SWS % | 11.62±9.93 | 12.72±10.17 | 0.64 |
| REM % | 13.81±5.88 | 13.94±6.86 | 0.93 |
| REM latency min | 115.87±65.38 | 118.34±65.47 | 0.87 |
| BAI log | 0.38±0.40 | 0.36±0.36 | 0.85 |
| BDI-II log | 0.39±0.38 | 0.59±0.40 | 0.03 |
Data are presented as mean±sd, unless otherwise stated. BMI: body mass index; AHI: apnoea–hypopnea index; SaO2: arterial oxygen saturation; WASO: wake after sleep onset; TST: total sleep time; N1: stage 1 sleep; N2: stage 2 sleep; SWS: slow wave sleep; REM: rapid eye movement; BAI: Beck Anxiety Inventory; BDI-II: Beck Depression Inventory II.
#
: hypertension defined as systolic blood pressure ⩾140 mmHg and/or diastolic blood pressure ⩾90 mmHg.