Table 1.
Baseline characteristics of study groups.
| Parameter | Control group (n = 24) | OSA group (n = 60) | P Value | |
|---|---|---|---|---|
| Sex | Women | 7 (29.2%) | 7 (11.7%) | .103 |
| Men | 17 (70.8%) | 53 (88.3%) | ||
| Age | 50.5 (41.3–59.0) | 56.5 (44.8–63.0) | .139 | |
| BMI | 27.4 ± 4.1 | 31.7 ± 4.8 | < .001 | |
| Total sleep time (h) | 6.0 ± 0.7 | 6.0 ± 0.9 | .879 | |
| AHI, events/h | 2.4 (1.2–4.0) | 24.3 (14.3–50.1) | < .001 | |
| Total number of desaturations | 14.0 (9.0–32.5) | 122.0 (80.5–287.5) | < .001 | |
| Desaturation index | 3.0 (1.8 – 5.5) | 27.0 (15.0–51.1) | < .001 | |
| Mean level of SpO2 during sleep (%) | 93.8 (92.5–94.7) | 92.0 (90.2–93.3) | < .001 | |
| Mean SpO2 of desaturations during sleep (%) | 90.7 (90.0–92.3) | 87.0 (84.9–89.0) | < .001 | |
| Minimal SpO2 during sleep (%) | 88.2 (85.7–90.9) | 76.2 (71.3–82.3) | < .001 | |
| Number of desaturations below 90% | 5.0 (0–20.5) | 98.0 (52.5–159.5) | < .001 | |
Variables with normal distribution are presented as mean ± standard deviation; variables with a nonnormal distribution are shown as median interquartile range. AHI = apnea-hypopnea index, BMI = body mass index, OSA = obstructive sleep apnea, SpO2 = hemoglobin oxygen saturation.