| Metric | Value |
|---|---|
| CPAP usage hours | 6.38 |
| Session count | 1 |
| AHI | 2.04 |
| RDI | 2.35 |
| Obstructive apneas (OA) | 9 |
| Hypopneas (H) | 3 |
| Central apneas (CA) | 1 |
| Unclassified apneas (UA) | 0 |
| RERA | 2 |
| Pressure_Avg | 8.50 |
| Pressure_Min | 4.00 |
| Pressure_Max | 12.32 |
| Pressure_90th | 10.32 |
| Leak_Avg | 1.68 |
| Leak_Max | 25.20 |
| Leak_90th | 8.40 |
| FL_Avg | 0.0185 |
| FL_P95 | 0.09 |
| FL_Max | 0.78 |
| Min_Above_005 (min) | 49.4 |
| Min_Above_010 (min) | 15.9 |
| Min_Above_020 (min) | 2.8 |
| Frac_NonZero (FL samples) | 32.74% |
| Apple Watch time in bed (min) | 367.8 |
| Apple Watch total sleep (min) | 359.3 |
| Apple Watch awake (min) | 8.5 |
| Apple Watch deep sleep (min / %) | 67.7 / 18.86% |
| Apple Watch REM sleep (min / %) | 123.4 / 34.36% |
| Apple Watch core sleep (min / %) | 168.1 / 46.79% |
| Sleep efficiency (TSD/TIB) | 97.68% |
Trailing windows exclude tonight by construction (they cover the 7 and 30 nights ending 2026-10-01).
| Metric | Tonight | 7d avg | 30d avg | Δ vs 7d | Δ vs 30d | 30d z |
|---|---|---|---|---|---|---|
| AHI | 2.04 | 1.65 | 2.05 | +23.6% | -0.3% | -0.01 |
| OA count | 9.00 | 8.00 | 9.37 | +12.5% | -3.9% | -0.11 |
| H count | 3.00 | 2.43 | 3.00 | +23.5% | +0.0% | 0.00 |
| CA count | 1.00 | 0.14 | 0.67 | +600.0% | +50.0% | +0.34 |
| RERA count | 2.00 | 0.43 | 0.60 | +366.7% | +233.3% | +1.67 |
| Pressure_Avg | 8.50 | 7.70 | 7.49 | +10.4% | +13.5% | +2.58 |
| Pressure_90th | 10.32 | 10.33 | 10.02 | -0.1% | +3.0% | +0.59 |
| Leak_Avg | 1.68 | 1.11 | 0.89 | +51.9% | +89.2% | +1.23 |
| Leak_Max | 25.20 | 22.46 | 20.08 | +12.2% | +25.5% | +0.63 |
| Leak_90th | 8.40 | 3.94 | 2.72 | +113.0% | +208.8% | +1.97 |
| Usage hours | 6.38 | 6.47 | 6.39 | -1.3% | -0.2% | -0.03 |
| FL_P95 | 0.09 | 0.09 | 0.09 | -4.5% | -3.6% | -0.19 |
| Min_Above_010 | 15.90 | 16.57 | 16.21 | -4.1% | -1.9% | -0.07 |
| Min_Above_020 | 2.80 | 3.19 | 3.61 | -12.1% | -22.5% | -0.50 |
| Metric | Tonight | 7d avg | 30d avg | Δ vs 7d | Δ vs 30d |
|---|---|---|---|---|---|
| Time in bed (min) | 367.8 | 382.5 | 377.8 | -3.8% | -2.6% |
| Total sleep (min) | 359.3 | 369.2 | 367.4 | -2.7% | -2.2% |
| Awake (min) | 8.5 | 13.3 | 10.4 | -35.7% | -18.3% |
| Deep (min) | 67.7 | 55.7 | 49.3 | +21.6% | +37.5% |
| REM (min) | 123.4 | 82.8 | 85.3 | +49.1% | +44.6% |
| Core (min) | 168.1 | 230.8 | 232.7 | -27.2% | -27.8% |
| Deep % | 18.86 | 15.19 | 13.48 | +24.1% | +39.9% |
| REM % | 34.36 | 22.21 | 23.14 | +54.7% | +48.5% |
| Core % | 46.79 | 62.60 | 63.39 | -25.3% | -26.2% |
| Sleep efficiency | 97.68 | 96.52 | 97.25 | +1.2% | +0.4% |
(These windows don't change with tonight — same week-over-week picture as the 2026-10-01 report.)
| Metric | Recent 7d | Prior 7d | Δ | Δ % |
|---|---|---|---|---|
| AHI | 1.650 | 2.144 | -0.494 | -23.1% |
| OA | 8.000 | 8.000 | +0.000 | +0.0% |
| H | 2.429 | 5.000 | -2.571 | -51.4% |
| CA | 0.143 | 0.286 | -0.143 | -50.0% |
| Pressure_Avg | 7.701 | 7.619 | +0.083 | +1.1% |
| Pressure_90th | 10.326 | 10.109 | +0.217 | +2.1% |
| Leak_Avg | 1.106 | 1.119 | -0.013 | -1.1% |
| Leak_90 | 3.943 | 3.429 | +0.514 | +15.0% |
| Leak_Max | 22.457 | 22.286 | +0.171 | +0.8% |
| Usage hours | 6.466 | 6.261 | +0.204 | +3.3% |
| FL_P95 | 0.094 | 0.100 | -0.006 | -5.7% |
| Min_Above_010 | 16.571 | 17.914 | -1.343 | -7.5% |
| Min_Above_020 | 3.186 | 3.529 | -0.343 | -9.7% |
| Date | AHI | OA | H | CA | PAvg | P90 | LAvg | LMax | L90 | FL_P95 | MinAbv010 | MinAbv020 | Hours |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 |
| 2026-09-30 | 1.44 | 7 | 2 | 0 | 8.01 | 10.40 | 1.18 | 16.80 | 3.60 | 0.10 | 16.9 | 2.0 | 6.25 |
| 2026-10-01 | 0.56 | 4 | 0 | 0 | 6.82 | 9.00 | 0.53 | 8.40 | 2.40 | 0.07 | 10.9 | 2.2 | 7.12 |
| 2026-10-02 | 2.04 | 9 | 3 | 1 | 8.50 | 10.32 | 1.68 | 25.20 | 8.40 | 0.09 | 15.9 | 2.8 | 6.38 |
Based on 76 matched (CPAP + Apple Watch sleep-stage) nights through 2026-10-02.
| Pair | the user r | Interpretation |
|---|---|---|
| AHI vs deep_pct | -0.152 | weak negative |
| AHI vs awake_min | -0.168 | weak negative |
| OA vs awake_min | -0.037 | negligible |
| Leak_Avg vs deep_pct | -0.015 | negligible |
| Leak_90 vs deep_pct | +0.002 | essentially zero |
| Leak_Max vs awake_min | -0.172 | weak negative |
| FL_P95 vs awake_min | -0.067 | negligible negative |
| Min_Above_010 vs deep_pct | -0.210 | weak negative |
Leak_90 median split (median = 2.40): - Low-leak nights (n=49): mean deep% 14.44, awake 14.47 min - High-leak nights (n=27): mean deep% 13.79, awake 10.98 min
Correlations remain weak overall. The counterintuitive sign (high-leak nights have slightly lower awake time) survives — and tonight exemplifies it: Leak_90 at 8.4 (clearly in the high-leak half) paired with only 8.5 awake minutes and strong deep + REM. The point stands that mild-to-moderate leak elevations have no demonstrable effect on sleep stage architecture in the user's record.
Tonight is a split verdict: CPAP side regressed moderately from last night's exceptional numbers; sleep architecture was unusually strong.
On the CPAP side, essentially everything that was good yesterday reverted toward the recent two-week baseline. Leak_90 jumped from 2.4 to 8.4 (back to the elevated range), Pressure_Avg climbed to 8.50 — a 2.58-SD outlier against the 30-day mean — and the event mix shifted (9 OA, 3 H, 1 CA, 2 RERA, AHI 2.04). This looks like one night, not a trend: a single-night reversion to the pattern that was in place before 2026-10-01's clean break. Nothing to act on, but if tomorrow's leak also returns to the 8–12 range, that's worth paying attention to — it would mean 2026-10-01 was the exception, not the start of a resolution.
The flagged Pressure_Avg (+2.58 SDs) is a bit unusual in isolation. Pressure_90th was only mildly elevated at 10.32 (+0.59 SDs vs 30d), so the machine wasn't hitting a higher ceiling — it was spending more time at the upper end. Combined with the leak increase, the most parsimonious reading is that the auto-titrator was compensating for mild mask leaks for longer stretches tonight.
On the sleep-architecture side, however, this was one of the best nights in the window. REM at 34.36% (123.4 min) is the highest of any recent matched night — 49% above the 30-day mean. Deep at 18.86% (67.7 min) is 40% above the 30-day mean. Awake was only 8.5 min — the lowest since 2026-09-20. Total time in bed was short at 367.8 min (6.13 h), but 97.68% of it was asleep. The CPAP regression evidently did not translate into subjective sleep disruption — if anything, this is textbook restorative architecture.
Pulling back to the week-level view: recent 7d AHI (1.65) is still -23% vs the prior 7d, and recent 7d H is -51%. Tonight's 2.04 doesn't disturb that broader improving trend. Watch tomorrow's leak profile — if it stays elevated, revisit the mask/seal; if it returns to <5, tonight was a one-off.