Sleep & CPAP Report — 2026-09-23
🚩 Flags
- AHI 1.94 — vs 30d avg 2.18 (-10.8%). 7d avg 2.38 (-18.6%). OA 9 vs 7d avg 10.14. H 3 vs 7d avg 4.29. CA 0. RERA 2.
- Leak_90 12.00 L/min — vs 30d avg 2.04 (+488.2%). Leak_Avg 2.87 (7d 0.71); Leak_Max 26.40 (7d 17.14).
- Sleep architecture: Deep% 18.83 (+50.7% vs 7d, +37.1% vs 30d); REM% 26.11 (+7.4% vs 7d, +5.2% vs 30d); Awake 5.52 min (-51.3% vs 7d, -39.6% vs 30d); Efficiency 98.46%.
- Time in bed 357.3 min (5h 57.3m) — vs 30d 371.2 (-3.8%). Total sleep 351.8 min. CPAP usage 6.18h.
Summary Table — Night of 2026-09-23
| Metric |
Value |
| Sleep start |
2026-09-23T23:46:57-05:00 |
| Time in bed |
357.3 min (5h 57.3m) |
| Total sleep |
351.8 min (5h 51.8m) |
| Sleep efficiency |
98.46% |
| Awake time |
5.52 min |
| Core (N1+N2) sleep |
193.69 min / 55.06% |
| Deep (N3) sleep |
66.24 min / 18.83% |
| REM |
91.83 min / 26.11% |
| CPAP usage hours |
6.18 |
| Session count |
1 |
| AHI |
1.94 |
| RDI |
2.26 |
| Obstructive apneas (OA) |
9 |
| Hypopneas (H) |
3 |
| Central apneas (CA) |
0 |
| Unclassified apneas (UA) |
0 |
| RERA |
2 |
| Pressure_Avg |
7.78 |
| Pressure_Min |
4.00 |
| Pressure_Max |
11.12 |
| Pressure_90th |
10.06 |
| Leak_Avg |
2.87 |
| Leak_Max |
26.40 |
| Leak_90th |
12.00 |
| FL_Avg |
0.0158 |
| FL_P95 |
0.1 |
| FL_Max |
0.61 |
| Min_Above_005 |
38.8 |
| Min_Above_010 |
17.4 |
| Min_Above_020 |
3.3 |
| Frac_NonZero (FL samples) |
24.53% |
Comparison to Trailing Averages
| Metric |
Tonight |
7d avg |
30d avg |
Δ vs 7d |
Δ vs 30d |
| AHI |
1.94 |
2.38 |
2.18 |
-18.6% |
-10.8% |
| OA count |
9.00 |
10.14 |
10.23 |
-11.3% |
-12.1% |
| H count |
3.00 |
4.29 |
2.83 |
-30.0% |
+5.9% |
| CA count |
0.00 |
1.00 |
1.00 |
-100.0% |
-100.0% |
| RERA count |
2.00 |
0.43 |
0.70 |
+366.7% |
+185.7% |
| Pressure_Avg |
7.78 |
7.51 |
7.40 |
+3.6% |
+5.2% |
| Pressure_90 |
10.06 |
9.92 |
9.87 |
+1.4% |
+1.9% |
| Leak_Avg |
2.87 |
0.71 |
0.74 |
+303.4% |
+288.0% |
| Leak_Max |
26.40 |
17.14 |
17.32 |
+54.0% |
+52.4% |
| Leak_90th |
12.00 |
1.71 |
2.04 |
+600.0% |
+488.2% |
| Usage hours |
6.18 |
6.51 |
6.48 |
-5.0% |
-4.7% |
| FL_P95 |
0.10 |
0.09 |
0.09 |
+6.1% |
+8.7% |
| Min_Above_010 |
17.40 |
16.90 |
16.29 |
+3.0% |
+6.8% |
| Min_Above_020 |
3.30 |
3.44 |
3.65 |
-4.1% |
-9.6% |
| Awake min |
5.52 |
11.33 |
9.13 |
-51.3% |
-39.6% |
| TIB min |
357.27 |
385.52 |
371.23 |
-7.3% |
-3.8% |
| Total sleep min |
351.75 |
374.19 |
362.10 |
-6.0% |
-2.9% |
| Deep % |
18.83 |
12.49 |
13.74 |
+50.7% |
+37.1% |
| REM % |
26.11 |
24.31 |
24.83 |
+7.4% |
+5.2% |
| Core % |
55.06 |
63.19 |
61.44 |
-12.9% |
-10.4% |
Week-over-Week Deltas (recent 7d 2026-09-17–2026-09-23 vs prior 7d 2026-09-10–2026-09-16)
| Metric |
Recent 7d |
Prior 7d |
Δ |
Δ % |
| AHI |
2.253 |
2.339 |
-0.086 |
-3.7% |
| OA |
9.143 |
11.857 |
-2.714 |
-22.9% |
| CA |
0.429 |
1.571 |
-1.143 |
-72.7% |
| Pressure_Avg |
7.591 |
7.293 |
+0.299 |
+4.1% |
| Leak_Avg |
1.109 |
0.481 |
+0.627 |
+130.3% |
| Leak_90 |
3.429 |
1.200 |
+2.229 |
+185.7% |
| Deep % (Apple) |
13.846 |
15.226 |
-1.380 |
-9.1% |
| REM % (Apple) |
24.763 |
26.033 |
-1.270 |
-4.9% |
| Awake min (Apple) |
10.681 |
8.172 |
+2.509 |
+30.7% |
| Sleep min (Apple) |
363.221 |
318.059 |
+45.162 |
+14.2% |
| FL_P95 |
0.097 |
0.087 |
+0.010 |
+11.5% |
| Min_Above_010 |
17.457 |
14.414 |
+3.043 |
+21.1% |
| Min_Above_020 |
3.514 |
4.157 |
-0.643 |
-15.5% |
Recent 10-Night Context
| Date |
AHI |
OA |
CA |
PAvg |
P90 |
LAvg |
LMax |
L90 |
FL_P95 |
MinAbv010 |
MinAbv020 |
Deep% |
REM% |
Awake |
| 2026-09-14 |
2.55 |
12 |
2 |
7.43 |
10.26 |
0.86 |
27.60 |
4.80 |
0.10 |
15.8 |
4.1 |
14.93 |
21.67 |
3.01 |
| 2026-09-15 |
1.93 |
10 |
0 |
7.76 |
10.02 |
0.74 |
14.40 |
2.40 |
0.12 |
21.2 |
6.9 |
12.66 |
24.62 |
8.53 |
| 2026-09-16 |
2.85 |
16 |
4 |
7.20 |
9.68 |
0.09 |
8.40 |
0.00 |
0.08 |
13.5 |
2.8 |
9.37 |
22.95 |
10.04 |
| 2026-09-17 |
2.41 |
11 |
2 |
7.17 |
9.22 |
0.52 |
10.80 |
1.20 |
0.07 |
12.0 |
3.3 |
18.64 |
20.41 |
20.07 |
| 2026-09-18 |
0.87 |
5 |
0 |
7.07 |
9.56 |
0.18 |
8.40 |
0.00 |
0.09 |
16.4 |
2.9 |
11.51 |
23.16 |
10.54 |
| 2026-09-19 |
3.23 |
15 |
0 |
7.60 |
9.64 |
0.41 |
14.40 |
1.20 |
0.10 |
16.8 |
2.1 |
10.83 |
25.42 |
14.55 |
| 2026-09-20 |
2.18 |
7 |
0 |
8.21 |
10.54 |
1.85 |
27.60 |
6.00 |
0.13 |
28.6 |
7.0 |
8.70 |
31.40 |
14.55 |
| 2026-09-21 |
1.94 |
5 |
1 |
7.82 |
10.46 |
0.90 |
14.40 |
1.20 |
0.09 |
16.2 |
2.9 |
13.07 |
23.78 |
5.52 |
| 2026-09-22 |
3.20 |
12 |
0 |
7.49 |
10.32 |
1.03 |
36.00 |
2.40 |
0.10 |
14.8 |
3.1 |
15.33 |
23.07 |
4.01 |
| 2026-09-23 |
1.94 |
9 |
0 |
7.78 |
10.06 |
2.87 |
26.40 |
12.00 |
0.10 |
17.4 |
3.3 |
18.83 |
26.11 |
5.52 |
CPAP → Sleep-Stage Correlations (all 85 matched nights)
Correlations computed across full available history (2026-06-23 → 2026-09-23).
| Pair |
the user r |
Interpretation |
| AHI vs deep_pct |
+0.022 |
negligible |
| AHI vs awake_min |
+0.048 |
negligible |
| OA vs awake_min |
+0.084 |
negligible |
| CA vs deep_pct |
+0.035 |
negligible |
| Leak_Avg vs deep_pct |
-0.136 |
weak negative |
| Leak_90th vs deep_pct |
-0.121 |
weak negative |
| Leak_Max vs awake_min |
+0.068 |
negligible |
| FL_P95 vs awake_min |
-0.075 |
negligible |
| Min_Above_010 vs deep_pct |
-0.018 |
negligible |
Bucket comparison (Leak_90 median split, median = 2.4):
- Low-leak nights (n=57): mean deep% 15.70, awake 14.43 min
- High-leak nights (n=28): mean deep% 13.36, awake 12.53 min
- Δ (high – low): deep% -2.34 pp, awake -1.90 min
Caveats
- Sleep session started at 2026-09-23T23:46:57-05:00 — matched to the 2026-09-23 CPAP file. Nights where the Apple Watch session begins after midnight are attributed to the previous CPAP calendar date.
- Apple Watch SpO2/pulse channels not present in current CPAP CSV export.
- Correlations are directional/small-effect only — single-night deviations often exceed what correlations alone would predict.
- All flagged metrics remain within clinically safe ranges (AHI < 5, leak within mask spec); flags mark deviations from the user's own recent baseline, not clinical thresholds.
- Duplicate
2.json / 3.json health-report files (iCloud dedup artifacts) are ignored in favor of the primary copy.
- Matched-night count is 85. Early 2026-06 nights (via multi-day roll-up) have zero-valued pressure/leak channels and remain low-confidence for CPAP metrics prior to ~2026-06-22.