Table 4. Demographic data and overnight polysomnography findings in different groups of OSA patients.
| AHI≤15 | 15<AHI<30 | AHI≥30 | |
| Total number of patients, NTotal | 133 | 51 | 64 |
| Patients with diabetes mellitus, NDM | 10 | 11 | 14 |
| Patients analysed, N (NTotal−NDM) | 123 | 40 | 50 |
| Male | 70 | 26 | 38 |
| Age (yrs) | 46±11 | 56±12 | 48±12 |
| BMI (kg/m2) | 32±8 | 32±5 | 39±9 |
| Weight (kg) | 91.2±21.4 | 93.4±19.6 | 111.2±23.6 |
| Height (cm) | 168.6±9.2 | 170.2±10.2 | 170.6±8.3 |
| RR interval (ms) | 911±120 | 956±131 | 845±123 |
| Respiratory interval (ms) | 3797.5±335.5 | 3947.4±315.8 | 3703.7±434.2 |
| Total length of recording (min) | 428.8±53.4 | 431.1±64.6 | 438.2±27.1 |
| Sleep time (min) | 346.0±55.4 | 346.9±60.6 | 352.8±64.8 |
| Wake time (min) | 61.1±42.4 | 64.7±42.3 | 74.1±56.8 |
| REM sleep (%) | 14.7±4.1 | 14.6±3.8 | 12.3±4.5 |
| Arousals (#/h) | 16.4±8.4* | 25.3±8.6* | 50.7±19.6* |
| Total percentage of coordination (%) | 13.5±6.2* | 11.6±5.1* | 8.8±4.5* |
| Mean duration of coordinated epochs (s) | 8.3±1.8* | 8.1±2.0* | 6.5±2.1* |
| Hypertension | 26 | 14 | 18 |
| Structural heart disease | 18 | 8 | 6 |
| Smoker | 14 | 2 | 8 |
Data are presented as mean ± standard deviation. Astericks indicate statistically significant changes (p<0.001).