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. 2023 May 22;27(6):2351–2359. doi: 10.1007/s11325-023-02823-2

Table 2.

Respiratory events, sleep structure during overnight titration, and the subject number at different titrated pressure (mean ± SE)

Parameter Baseline Manual titration p value
Total record time (min) 497.5 ± 4.3 502.4 ± 4.6 0.373
Total sleep time (min) 396.7 ± 5.9 415.1 ± 6.1 0.006
Sleep onset latency (min) 19.7 ± 2.2 22.3 ± 3.1 0.491
Sleep Efficiency (%) 80.2 ± 1.2 82.4 ± 1.3 0.120
Arousal index (events/h) 33.2 ± 1.8 10.8 ± 0.4 0.000
REM sleep (%) 16.8 ± 0.6 23.2 ± 0.7 0.000
Stage 1 (%) 24.8 ± 1.3 15.4 ± 0.9 0.000
Stage 2 (%) 52.1 ± 1.1 53.0 ± 1.1 0.482
Stage 3 (%) 6.2 ± 0.6 8.4 ± 0.8 0.006
AHI (events/h) 42.5 ± 2.2 4.7 ± 0.4 0.000
OAI (events/h) 20.5 ± 1.7 0.9 ± 0.1 0.000
CAI (events/h) 2.3 ± 0.3 0.9 ± 0.1 0.000
MAI (events/h) 4.8 ± 0.7 0.1 ± 0.0 0.000
HI (events/h) 14.8 ± 1.0 2.8 ± 0.2 0.000
Sleep time mean SaO2 (%) 94.0 ± 0.3 96.2 ± 0.1 0.000
Lowest SaO2 (%) 75.9 ± 1.1 88.0 ± 0.9 0.000
ODI (events/h) 30.6 ± 2.1 3.6 ± 0.3 0.000
Pressure ≤ 6 cmH2O (n, %) 61 (48.0%)
Pressure 7–8 cmH2O (n, %) 41(32.3%)
Pressure 9–10 cmH2O (n, %) 19 (15.0%)
Pressure ≥ 11 cmH2O 6 (4.7%)