Daily Report — 2026-08-31

Sleep & CPAP Report — 2026-08-31

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Summary Table — Night of 2026-08-31

Metric Value
Sleep start 2026-08-31 23:16:37-05:00
Time in bed 370.3 min (6h 10m)
Total sleep 358.8 min (5h 59m)
Sleep efficiency 96.9%
Awake time 11.5 min
Core (N1+N2) sleep 216.8 min / 60.4%
Deep (N3) sleep 72.8 min / 20.3%
REM 69.2 min / 19.3%
CPAP usage hours 6.43
Session count 1
AHI 2.49
RDI 2.64
Obstructive apneas (OA) 14
Hypopneas (H) 0
Central apneas (CA) 2
Unclassified apneas (UA) 0
RERA 1
Pressure avg 7.96 cmHâ‚‚O
Pressure min 4.00 cmHâ‚‚O
Pressure 90th 10.56 cmHâ‚‚O
Pressure max 11.80 cmHâ‚‚O
Leak avg 0.27 L/min
Leak 90th 1.2 L/min
Leak max 8.4 L/min
Flow-limit p95 0.10
Flow-limit min >0.10 16.2
Flow-limit min >0.20 3.5

Trailing Averages Comparison

Metric Tonight 7-day avg Δ vs 7d 30-day avg Δ vs 30d
AHI 2.49 2.10 +18% 1.85 +35%
OA count 14 10.29 +36% 8.47 +65%
H count 0 2.43 -100% 2.97 -100%
CA count 2 1.43 +40% 0.93 +114%
Leak_Avg (L/min) 0.27 0.80 -66% 0.82 -67%
Leak_90th (L/min) 1.2 2.40 -50% 2.52 -52%
Pressure_Avg 7.96 7.24 +10% 7.50 +6%
Pressure_90th 10.56 9.57 +10% 10.03 +5%
Usage hours 6.43 6.76 -5% 6.69 -4%
Deep sleep % 20.3 11.71 +8.6 pp 12.59 +7.7 pp
REM % 19.3 26.55 -7.3 pp 23.82 -4.5 pp
Awake min 11.5 7.14 +61% 14.86 -23%
Total sleep (min) 359 391.67 -8% 384.76 -7%

Week-over-Week Trend

Metric Recent 7d (08/25—08/31) Prior 7d (08/18—08/24) Direction
AHI 2.20 1.90 ↑ +15.5%
OA count 11.00 9.43 ↑ +16.7%
H count 2.00 3.14 ↓ -36.4%
CA count 1.71 0.29 ↑ +500.0%
Leak_Avg 0.78 0.86 ↓ -9.6%
Leak_90th 2.57 1.89 ↑ +36.4%
Pressure_Avg 7.43 7.63 ↓ -2.6%
Pressure_90th 9.84 10.40 ↓ -5.4%
Deep sleep % 12.90 12.54 ↑ +2.9%
REM % 25.69 23.16 ↑ +10.9%

Recent 10-Night Detail

Date AHI OA H CA Leak_Avg Leak_90th P_Avg Hours
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
2026-08-24 1.81 9 3 0 0.37 0.0 6.64 6.63
2026-08-23 0.77 3 2 0 0.94 3.6 7.53 6.48
2026-08-22 1.54 8 2 0 0.74 0.0 8.00 6.48

Correlation Analysis (64 matched nights)

Pair the user r
AHI ↔ Deep sleep % +0.13 (weak positive)
AHI ↔ Awake minutes +0.07 (none)
Leak_Avg ↔ Deep sleep % -0.20 (weak negative)
Leak_Avg ↔ Awake minutes -0.05 (none)
Leak_90th ↔ Deep sleep % -0.24 (weak negative)
Leak_90th ↔ Awake minutes -0.06 (none)

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

Directional: low-leak nights average 1.15 pp more deep sleep. Leak_90th ↔ Deep-sleep correlation of -0.24 is the strongest signal in the matrix — weak but consistent with the split above.

Interpretation

AHI 2.49 lands above the 30-day mean of 1.85, and RDI 2.64 tracks it closely. Event mix skews obstructive (14 OA / 0 H / 2 CA / 1 RERA), in line with the recent pattern.

Mask fit was excellent — Leak_Avg 0.27, Leak_90th 1.2, Leak_Max 8.4. That sits -67% vs the 30d baseline of 0.82. Pressure averaged 7.96 cmH₂O with a 90th of 10.56 — above the recent 30d mean.

Sleep architecture: deep 20.3% (+7.7 pp vs 30d), REM 19.3% (-4.5 pp vs 30d), efficiency 96.9% with 11.5 min awake over 6h 10m in bed. Nothing in the architecture jumps out as unusual.

Week-over-week: AHI 2.20 vs prior 1.90 (up 15.5%); Leak 0.78 vs 0.86 (down 9.6%); Pressure 7.43 vs 7.63.

Watch items rolling forward: any second consecutive deep-sleep dip below 10%; leak elevation ≥ 1.91 L/min for 2+ nights; AHI streaks ≥ 3.30 for 3+ nights.

Subjectively: likely a good night — 5h 59m sleep, 11.5 min awake, efficiency 96.9%.

Caveats

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