Daily Report — 2026-09-03

Sleep & CPAP Report — 2026-09-03

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Summary Table — Night of 2026-09-03

Metric Value
Sleep start 2026-09-03 22:36:36-05:00
Time in bed 413.0 min (6h 53m)
Total sleep 397.4 min (6h 37m)
Sleep efficiency 96.2%
Awake time 15.6 min
Core (N1+N2) sleep 240.4 min / 60.5%
Deep (N3) sleep 62.2 min / 15.7%
REM 94.8 min / 23.9%
CPAP usage hours 6.97
Session count 1
AHI 2.15
RDI 2.30
Obstructive apneas (OA) 11
Hypopneas (H) 4
Central apneas (CA) 0
Unclassified apneas (UA) 0
RERA 1
Pressure avg 7.65 cmHâ‚‚O
Pressure min 4.00 cmHâ‚‚O
Pressure 90th 9.40 cmHâ‚‚O
Pressure max 11.82 cmHâ‚‚O
Leak avg 1.98 L/min
Leak 90th 7.2 L/min
Leak max 28.8 L/min
Flow-limit p95 0.10
Flow-limit min >0.10 17.1
Flow-limit min >0.20 2.9

Trailing Averages Comparison

Metric Tonight 7-day avg Δ vs 7d 30-day avg Δ vs 30d
AHI 2.15 2.18 -1% 1.89 +14%
OA count 11 10.86 +1% 9.03 +22%
H count 4 2.29 +75% 2.70 +48%
CA count 0 1.29 -100% 0.83 -100%
Leak_Avg (L/min) 1.98 0.83 +139% 0.83 +139%
Leak_90th (L/min) 7.2 2.91 +147% 2.48 +190%
Pressure_Avg 7.65 7.59 +1% 7.58 +1%
Pressure_90th 9.40 10.11 -7% 10.11 -7%
Usage hours 6.97 6.60 +6% 6.60 +6%
Deep sleep % 15.7 15.23 +0.4 pp 13.61 +2.1 pp
REM % 23.9 24.73 -0.9 pp 23.94 -0.1 pp
Awake min 15.6 7.17 +117% 12.85 +21%
Total sleep (min) 397 380.63 +4% 380.97 +4%

Week-over-Week Trend

Metric Recent 7d (08/28—09/03) Prior 7d (08/21—08/27) Direction
AHI 2.03 1.86 ↑ +9.0%
OA count 10.43 9.00 ↑ +15.9%
H count 2.29 2.86 ↓ -20.0%
CA count 0.86 1.00 ↓ -14.3%
Leak_Avg 0.99 0.65 ↑ +53.4%
Leak_90th 3.43 1.37 ↑ +150.0%
Pressure_Avg 7.59 7.37 ↑ +3.1%
Pressure_90th 10.04 9.80 ↑ +2.5%
Deep sleep % 15.88 12.92 ↑ +22.9%
REM % 24.16 25.91 ↓ -6.7%

Recent 10-Night Detail

Date AHI OA H CA Leak_Avg Leak_90th P_Avg Hours
2026-09-03 2.15 11 4 0 1.98 7.2 7.65 6.97
2026-09-02 0.98 5 1 0 0.87 2.4 7.64 6.12
2026-09-01 1.82 8 4 0 0.91 2.4 7.60 6.58
2026-08-31 2.49 14 0 2 0.27 1.2 7.96 6.43
2026-08-30 1.29 8 0 1 1.71 7.2 8.00 6.98
2026-08-29 3.07 15 6 0 0.93 3.6 8.23 6.85
2026-08-28 2.43 12 1 3 0.28 0.0 6.08 6.58
2026-08-27 3.17 14 4 3 0.83 3.6 7.59 6.63
2026-08-26 1.33 7 1 1 0.72 0.0 7.09 6.77
2026-08-25 1.61 7 2 2 0.73 2.4 7.05 6.85

Correlation Analysis (65 matched nights)

Pair the user r
AHI ↔ Deep sleep % +0.13 (weak positive)
AHI ↔ Awake minutes +0.07 (none)
Leak_Avg ↔ Deep sleep % -0.19 (weak negative)
Leak_Avg ↔ Awake minutes -0.05 (none)
Leak_90th ↔ Deep sleep % -0.23 (weak negative)
Leak_90th ↔ Awake minutes -0.05 (none)

High- vs low-leak bucket comparison (split at Leak_Avg median = 0.73 L/min):

Directional: low-leak nights average 1.12 pp more deep sleep. Leak_90th ↔ Deep-sleep correlation of -0.23 is the strongest signal in the matrix — weak but consistent with the split above. Tonight sits well above the high-leak bucket's own average, so the "leak drags deep sleep down" signal doesn't apply cleanly — deep sleep actually held at 15.7%, above the 30d mean.

Interpretation

The story tonight is leak, not events. Leak_Avg 1.98 is 2.4× the 30d mean and effectively at the user's personal elevated threshold (1.93). Leak_90th 7.2 is nearly triple baseline, and Leak_Max 28.8 is the largest spike in the recent 10-night window. This is the culmination of a week where mask fit has been trending softer — recent 7d Leak_Avg 0.99 vs prior 7d 0.65 (+53%), and Leak_90th 3.43 vs 1.37 (+150%). Worth checking mask cushion condition, headgear tension, or sleep position before it becomes a 3-night streak.

Despite the leak, AHI held at 2.15 — well controlled (<5) and only +14% vs 30d. Event mix was heavily obstructive (11 OA / 4 H / 0 CA / 1 RERA), consistent with the recent obstructive-skewed pattern. Hypopneas were slightly up (+48% vs 30d), which sometimes tracks with mask leak reducing effective pressure delivery. Pressure_Avg 7.65 was flat, and Pressure_90th 9.40 actually came in 7% below baseline — the device didn't ramp much despite the leak.

Sleep architecture was resilient: deep 15.7% (+2.1 pp vs 30d), REM 23.9% (flat), 6h 37m total sleep, efficiency 96.2%. Awake minutes 15.6 is the highest in a week (7d avg 7.2 min) but still within a normal range.

Watch items rolling forward: - Second consecutive night with Leak_Avg ≥ 1.93 → mask/fit intervention. - Any AHI streak ≥ 3.29 for 3+ nights. - Rising 7d leak trend continuing next week.

Subjectively: Probably felt reasonable — 6h 37m sleep, deep sleep held. The leak may have been silent to the sleeper but is worth attention before it compounds.

Caveats

See all past reports →