Table 4.
Polysomnographic evaluation of the studied groups.
| Parameter | Coffee drinkers | No coffee drinkers | p | Black tea drinkers | No black tea drinkers | p |
|---|---|---|---|---|---|---|
| AHI (n/h) | 21.30 ± 24.11 | 20.21 ± 24.52 | >0.05 | 21.25 ± 22.44 | 20.84 ± 27.15 | >0.05 |
| ODI (n/h) | 19.73 ± 22.30 | 17.36 ± 20.19 | >0.05 | 19.22 ± 20.22 | 19.44 ± 24.87 | >0.05 |
| Snore (%) | 21.92 ± 21.37 | 20.11 ± 22.37 | >0.05 | 21.58 ± 22.22 | 21.60 ± 20.30 | >0.05 |
| PLMS index (n/h) | 8.60 ± 19.61 | 6.00 ± 8.91 | >0.05 | 9.23 ± 21.75 | 6.10 ± 8.01 | >0.05 |
| SL (min) | 19.54 ± 23.68 | 18.87 ± 20.00 | >0.05 | 19.99 ± 25.20 | 18.37 ± 18.46 | >0.05 |
| REM latency (min) | 98.48 ± 69.40 | 118.58 ± 102.57 | >0.05 | 100.11 ± 77.12 | 105.80 ± 75.60 | >0.05 |
| WASO (min) | 57.94 ± 43.07 | 85.33 ± 70.50 | 0.029 | 67.41 ± 50.12 | 54.60 ± 49.04 | >0.05 |
| SE (%) | 83.20 ± 10.63 | 78.71 ± 16.44 | >0.05 | 81.39 ± 11.86 | 84.22 ± 11.99 | >0.05 |
| N1 (% of TST) | 6.31 ± 5.62 | 7.43 ± 6.01 | >0.05 | 7.26 ± 6.24 | 5.15 ± 4.20 | >0.05 |
| N2 (% of TST) | 48.02 ± 17.90 | 61.30 ± 40.15 | 0.011 | 49.48 ± 23.82 | 52.14 ± 24.04 | >0.05 |
| N3 (% of TST) | 27.56 ± 29.68 | 24.30 ± 13.28 | >0.05 | 24.72 ± 10.19 | 31.10 ± 44.18 | >0.05 |
| REM (% of TST) | 22.91 ± 7.29 | 21.59 ± 18.75 | >0.05 | 22.61 ± 11.30 | 22.78 ± 8.02 | >0.05 |
| AI (n/h) | 10.52 ± 16.20 | 12.33 ± 21.85 | >0.05 | 10.74 ± 16.99 | 11.04 ± 17.95 | >0.05 |
| Average Sp02 (%) | 92.51 ± 5.10 | 92.88 ± 2.68 | >0.05 | 92.19 ± 5.53 | 93.28 ± 2.69 | >0.05 |
| Minimal Sp02 (%) | 82.02 ± 9.04 | 81.21 ± 8.31 | >0.05 | 81.58 ± 8.12 | 82.41 ± 10.22 | >0.05 |
| Sp02 duration <90% (%) | 10.41 ± 16.68 | 11.55 ± 20.11 | >0.05 | 11.33 ± 17.34 | 9.29 ± 17.24 | >0.05 |
AHI, apnea-hypopnea index; ODI, oxygen desaturation index; PLMS, periodic limb movements syndrome; SL, sleep latency; WASO, wake after sleep onset; SE, sleep efficiency; N1, non-rapid eye movement sleep stage 1; N2, non-rapid eye movement sleep stage 2; N3, non-rapid eye movement sleep stage 3; REM: rapid eye movement; TST, total sleep time; AI, arousal index; BEI, Sp02; oxygen blood saturation, SD; standard deviation; min, minutes; n/h, number/hour; statistically significant values are shown in bold (p < 0.05).