| Metric | Value |
|---|---|
| CPAP usage hours | 6.22 |
| Session count | 1 |
| AHI | 1.45 |
| RDI | 1.45 |
| Obstructive apneas (OA) | 8 |
| Hypopneas (H) | 1 |
| Central apneas (CA) | 0 |
| Unclassified apneas (UA) | 0 |
| RERA | 0 |
| Pressure_Avg | 8.10 |
| Pressure_Min | 4.00 |
| Pressure_Max | 13.22 |
| Pressure_90th | 11.34 |
| Leak_Avg | 0.44 |
| Leak_Max | 33.60 |
| Leak_90th | 0.00 |
| FL_Avg | 0.0119 |
| FL_P95 | 0.07 |
| FL_Max | 0.38 |
| Min_Above_005 (min) | 25.8 |
| Min_Above_010 (min) | 10.6 |
| Min_Above_020 (min) | 2.5 |
| Frac_NonZero (FL samples) | 21.97% |
| Apple Watch time in bed (min) | 356.8 |
| Apple Watch total sleep (min) | 335.7 |
| Apple Watch awake (min) | 21.1 |
| Apple Watch deep sleep (min / %) | 44.7 / 13.30% |
| Apple Watch REM sleep (min / %) | 53.7 / 15.99% |
| Apple Watch core sleep (min / %) | 237.3 / 70.70% |
| Sleep efficiency (TSD/TIB) | 94.1% |
Trailing windows exclude tonight by construction (they cover the 7 and 30 nights ending 2026-09-28).
| Metric | Tonight | 7d avg | 30d avg | Δ vs 7d | Δ vs 30d | 30d z |
|---|---|---|---|---|---|---|
| AHI | 1.45 | 2.13 | 2.12 | -31.8% | -31.5% | -1.01 |
| OA count | 8.00 | 8.71 | 9.73 | -8.2% | -17.8% | -0.50 |
| H count | 1.00 | 4.29 | 3.03 | -76.7% | -67.0% | -0.94 |
| CA count | 0.00 | 0.29 | 0.77 | -100.0% | -100.0% | -0.76 |
| RERA count | 0.00 | 0.71 | 0.70 | -100.0% | -100.0% | -0.84 |
| Pressure_Avg | 8.10 | 7.66 | 7.51 | +5.8% | +7.8% | 1.59 |
| Pressure_90th | 11.34 | 10.30 | 10.03 | +10.1% | +13.0% | 3.02 |
| Leak_Avg | 0.44 | 1.44 | 0.91 | -69.4% | -51.8% | -0.71 |
| Leak_Max | 33.60 | 27.09 | 19.56 | +24.1% | +71.8% | 1.79 |
| Leak_90th | 0.00 | 5.31 | 2.88 | -100.0% | -100.0% | -0.95 |
| Usage hours | 6.22 | 6.26 | 6.40 | -0.7% | -2.9% | -0.47 |
| FL_P95 | 0.07 | 0.10 | 0.10 | -31.0% | -26.8% | -1.51 |
| Min_Above_010 | 10.60 | 17.86 | 16.78 | -40.6% | -36.8% | -1.50 |
| Min_Above_020 | 2.50 | 3.63 | 3.82 | -31.1% | -34.6% | -0.76 |
| Metric | Recent 7d | Prior 7d | Δ | Δ % |
|---|---|---|---|---|
| AHI | 1.877 | 2.383 | -0.506 | -21.2% |
| OA | 8.143 | 10.143 | -2.000 | -19.7% |
| H | 3.429 | 4.286 | -0.857 | -20.0% |
| CA | 0.286 | 1.000 | -0.714 | -71.4% |
| Pressure_Avg | 7.746 | 7.509 | +0.237 | +3.2% |
| Pressure_90th | 10.446 | 9.917 | +0.529 | +5.3% |
| Leak_Avg | 1.356 | 0.711 | +0.644 | +90.6% |
| Leak_90 | 4.971 | 1.714 | +3.257 | +190.0% |
| Leak_Max | 26.743 | 17.143 | +9.600 | +56.0% |
| Usage hours | 6.303 | 6.506 | -0.203 | -3.1% |
| FL_P95 | 0.097 | 0.094 | +0.003 | +3.0% |
| Min_Above_010 | 17.257 | 16.900 | +0.357 | +2.1% |
| Min_Above_020 | 3.543 | 3.443 | +0.100 | +2.9% |
| Date | AHI | OA | H | CA | PAvg | P90 | LAvg | LMax | L90 | FL_P95 | MinAbv010 | MinAbv020 | Hours |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026-09-20 | 2.18 | 7 | 7 | 0 | 8.21 | 10.54 | 1.85 | 27.60 | 6.00 | 0.13 | 28.6 | 7.0 | 6.42 |
| 2026-09-21 | 1.94 | 5 | 6 | 1 | 7.82 | 10.46 | 0.90 | 14.40 | 1.20 | 0.09 | 16.2 | 2.9 | 6.20 |
| 2026-09-22 | 3.20 | 12 | 7 | 0 | 7.49 | 10.32 | 1.03 | 36.00 | 2.40 | 0.10 | 14.8 | 3.1 | 5.93 |
| 2026-09-23 | 1.94 | 9 | 3 | 0 | 7.78 | 10.06 | 2.87 | 26.40 | 12.00 | 0.10 | 17.4 | 3.3 | 6.18 |
| 2026-09-24 | 1.65 | 3 | 6 | 1 | 7.36 | 10.18 | 0.59 | 28.80 | 1.20 | 0.09 | 15.2 | 3.4 | 6.05 |
| 2026-09-25 | 2.74 | 11 | 4 | 1 | 8.04 | 10.60 | 1.13 | 22.80 | 3.60 | 0.11 | 18.0 | 3.1 | 5.83 |
| 2026-09-26 | 2.72 | 13 | 6 | 0 | 7.66 | 10.50 | 2.37 | 22.80 | 9.60 | 0.10 | 19.2 | 5.1 | 6.98 |
| 2026-09-27 | 1.41 | 6 | 3 | 0 | 7.74 | 10.08 | 1.05 | 18.00 | 4.80 | 0.10 | 18.2 | 3.9 | 6.38 |
| 2026-09-28 | 1.23 | 7 | 1 | 0 | 7.54 | 10.36 | 1.04 | 34.80 | 3.60 | 0.11 | 22.2 | 3.5 | 6.48 |
| 2026-09-29 | 1.45 | 8 | 1 | 0 | 8.10 | 11.34 | 0.44 | 33.60 | 0.00 | 0.07 | 10.6 | 2.5 | 6.22 |
Based on 68 matched (CPAP + Apple Watch sleep-stage) nights through 2026-09-29.
| Pair | the user r | Interpretation |
|---|---|---|
| AHI vs deep_pct | -0.137 | weak negative |
| AHI vs awake_min | -0.167 | weak negative |
| OA vs awake_min | -0.042 | negligible negative |
| Leak_Avg vs deep_pct | -0.028 | negligible negative |
| Leak_90th vs deep_pct | -0.049 | negligible negative |
| Leak_Max vs awake_min | -0.146 | weak negative |
| FL_P95 vs awake_min | 0.002 | negligible positive |
| Min_Above_010 vs deep_pct | -0.162 | weak negative |
Leak_90 median split (median = 2.40): - Low-leak nights (n=45): mean deep% 14.16, awake 14.32 min - High-leak nights (n=23): mean deep% 12.84, awake 11.04 min
Mixed night. The CPAP metrics are mostly fine — AHI 1.45 is well below the 30-day baseline, Leak_Avg 0.44 is at the low end of the range, and Leak_90 is actually 0.0 (lowest observed in the 30-day window). But two signals stand out and both deserve attention.
First, Pressure_90th hit 11.34 cmH2O, the single highest value in the last 30 days. The auto-titrator responded to something, but the obvious drivers aren't elevated: OA 8 is modest, H 1 is a single event. The most likely explanation is that flow-limitation at mid-pressure thresholds — the kind that doesn't register as a scored obstructive event — drove the titrator up. Min_Above_010 at 10.6 min is in the normal range, so this isn't a dramatic FL load, but the titrator can respond to shorter-duration FL bursts than daily aggregates capture. Not clinically concerning, but worth flagging as a divergence from the usual event-driven titration pattern.
Second, Apple Watch recorded 21.1 min of awake time — roughly 3× the 10-night trailing average, with REM minutes 53.7 the lowest in 10 nights. Sleep efficiency dropped to 94.1%, well below the usual high-90s. This is the first night in recent memory where the Apple Watch data looks clearly worse than the CPAP data would predict. Possible explanations: (a) a non-CPAP sleep disruption (noise, caffeine, stress, pain), (b) a stage-detection anomaly on the Apple Watch, or (c) a real sleep-fragmentation event that didn't trigger scored CPAP events. One night is noise, but keep an eye on this.
The Leak_Max of 33.6 is the second-highest in 30d (behind yesterday's 34.8), continuing the brief-transient pattern. Leak_Avg/90 are both low, so the mask is sealing well most of the night.