Table 2.
Desaturation parameter values at the baseline, after the follow-up, and changes in parameter values between the two PSG recordings.
| No- | Any- | Hypertension- | Diabetes- | CVD- | ||||
|---|---|---|---|---|---|---|---|---|
| Comorbidities | Comorbidity | Absence | Presence | Absence | Presence | Absence | Presence | |
| ODI (1/h) | ||||||||
| Baseline (1st PSG) | 3.2 (1.4, 8.1) | 5.9 (2.6, 12.2)*# | 3.3 (1.5, 8.3) | 5.9 (2.6, 12.2)*# | 4.2 (1.7, 10.0)# | 7.3 (3.1, 12.7)*# | 4.1 (1.7, 9.7)# | 7.2 (2.9, 14.5)*# |
| Follow-up (2nd PSG) | 8.1 (4.1, 15.8) | 12.3 (6.4, 22.7)*# | 8.6 (4.4, 16.6) | 12.2 (6.3, 22.8)*# | 9.8 (4.9, 18.6)# | 16.9 (8.4, 28.6)*# | 9.6 (4.8, 18.6)# | 14.9 (8.9, 26.5)*# |
| Change | 4.1 (1.3, 8.7) | 5.1 (1.1, 12.6)*# | 4.4 (1.3, 8.9) | 5.0 (1.1, 12.5)*# | 4.5 (1.2, 9.9) | 6.9 (2.0, 19.2)*# | 4.5 (1.2, 9.9) | 7.0 (1.4, 14.8)*# |
| DesSev (%) | ||||||||
| Baseline (1st PSG) | 0.08 (0.03, 0.22) | 0.16 (0.06, 0.34)*# | 0.08 (0.03, 0.23) | 0.16 (0.06, 0.34)*# | 0.11 (0.04, 0.29)# | 0.19 (0.08, 0.32)*# | 0.10 (0.04, 0.27)# | 0.21 (0.08, 0.41)*# |
| Follow-up (2nd PSG) | 0.19 (0.09, 0.41) | 0.31 (0.15, 0.64)*# | 0.20 (0.09, 0.43) | 0.31 (0.15, 0.64)*# | 0.24 (0.11, 0.50)# | 0.37 (0.19, 0.84)*# | 0.24 (0.11, 0.49)# | 0.38 (0.23, 0.72)*# |
| Change | 0.09 (0.02, 0.22) | 0.12 (0.02, 0.30)*# | 0.09 (0.02, 0.22) | 0.12 (0.02, 0.30)*# | 0.10 (0.02, 0.25) | 0.15 (0.05, 0.50)*# | 0.10 (0.02, 0.24) | 0.16 (0.03, 0.35)*# |
| DesDur (%) | ||||||||
| Baseline (1st PSG) | 2.6 (1.0, 7.0) | 5.2 (2.1, 10.4)*# | 2.8 (1.1, 7.4) | 5.2 (2.1, 10.4)*# | 3.5 (1.4, 8.6)# | 6.1 (2.6, 10.4)*# | 3.5 (1.4, 8.3)# | 6.3 (2.7, 11.9)*# |
| Follow-up (2nd PSG) | 6.9 (3.5, 13.7) | 10.7 (5.6, 19.4)*# | 7.2 (3.6, 14.1) | 10.6 (5.6, 19.4)*# | 8.5 (4.0, 16.1)# | 12.8 (6.7, 24.9)*# | 8.3 (3.9, 15.7)# | 12.6 (7.7, 22.4)*# |
| Change | 3.5 (1.0, 7.4) | 4.3 (1.0, 10.0)*# | 3.6 (1.1, 7.6) | 4.3 (0.9, 10.0)*# | 3.9 (1.0, 8.4) | 5.4 (2.2, 15.2)*# | 3.8 (1.0, 8.2) | 5.8 (1.4, 11.5)*# |
| avg. DesArea (s%) | ||||||||
| Baseline (1st PSG) | 88.2 (70.6, 109.6) | 95.4 (78.5, 116.6)*# | 88.8 (71.7, 110.1) | 94.9 (78.4, 117.2)*# | 91.8 (74.8, 113.6)# | 92.8 (76.8, 112.8) | 91.1 (73.8, 113.0)# | 98.6 (82.8, 116.3)*# |
| Follow-up (2nd PSG) | 85.6 (70.2, 103.5) | 90.0 (76.5, 109.3)*# | 85.6 (70.7, 103.8) | 90.6 (76.5, 109.3)*# | 88.2 (73.1, 107.2)# | 86.6 (73.9, 105.7) | 87.8 (72.3, 106.4)# | 90.2 (79.5, 111.1)*# |
| Change | −2.1 (−19.0, 15.5) | −3.7 (−22.4, 13.3) | −2.4 (−19.2, 15.2) | −2.9 (−22.6, 13.8) | −2.6 (−20.5, 14.6) | −1.6 (−22.3, 12.2) | −2.3 (−20.2, 14.7) | −5.2 (−23.8, 11.0) |
| avg. DesDur (s) | ||||||||
| Baseline (1st PSG) | 28.6 (23.4, 34.1) | 29.3 (24.8, 34.4)*# | 28.8 (23.5, 34.1) | 29.1 (24.7, 34.4)*# | 29.0 (24.1, 34.4)# | 28.5 (24.2, 32.2) | 28.8 (24.0, 34.2) | 30.3 (26.2, 34.5)*# |
| Follow-up (2nd PSG) | 29.1 (24.8, 33.7) | 29.5 (25.5, 33.8) | 29.1 (24.9, 33.7) | 29.5 (25.6, 33.8) | 29.4 (25.3, 33.8) | 28.1 (24.4, 32.6)* | 29.3 (25.1, 33.7) | 29.6 (26.0, 34.6)# |
| Change | 0.6 (−4.6, 5.7) | 0.0 (−4.7, 4.4)*# | 0.5 (−4.7, 5.5) | 0.1 (−4.7, 4.4) | 0.3 (−4.7, 5.2) | 0.3 (−4.4, 3.4) | 0.4 (−4.7, 5.2) | −0.6 (−4.9, 4.1) |
Parameter values are presented as medians and interquartile ranges.
(#)
denotes statistical significance between No-Comorbidities group and the group under the hashtag.
(*)
denotes statistically significant difference compared to the corresponding absence group.
Statistical significance of differences (p<0.05) was determined with Mann-Whitney U test. PSG = polysomnography, ODI = oxygen desaturation index, DesSev = desaturation severity, DesDur = desaturation duration, avg. DesArea = average desaturation area of individual desaturation events, avg. DesDur = average desaturation duration of individual desaturation events.