The Apnealytics blog

Field notes for life on CPAP.

Practical guides, data deep-dives and product news from the team building Apnealytics. Plain English, checked against the sources, never a sales pitch.

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Your data, explained

Showing 6 of 7 articles

Six numbered boxes, labelled Six numbers, in order, for reading a CPAP report

YOUR DATA· 30 min read

How to Read CPAP Data: The Complete Guide to Every Number on Your Report

Check five things in order: usage, leak, AHI, event mix and pressure. Then read each number by brand, with a worked night, a 90-day trend and 27 primary sources.

Apnealytics Editorial
A bar chart with 30D, 90D, 1Y and All ranges and one highlighted bar, showing a therapy trend

YOUR DATA· 6 min read

What your 30-day AHI trend is really telling you

One night is weather; thirty nights is climate. How to read the trend line.

Apnealytics Editorial
A stepped pressure line inside a dashed set-range box, labelled P95

YOUR DATA· 5 min read

Why your pressure climbs at 4 a.m. (and when it matters)

An auto-adjusting machine moves pressure through the night. Late-night rises are common, and usually not a problem.

Apnealytics Editorial
A bar chart with 30D, 90D, 1Y and All ranges and one highlighted bar, showing a therapy trend

YOUR DATA· 6 min read

Residual AHI vs diagnostic AHI: why the numbers differ

Your sleep study and your machine measure different things. Here is how to compare them fairly.

Apnealytics Editorial
A stepped pressure line inside a dashed set-range box, labelled P95

YOUR DATA· 5 min read

P95 pressure in plain English

The one pressure number worth watching, and why it is rarely your maximum setting.

Apnealytics Editorial
A blue overnight SpO₂ line with two dips, labelled SpO₂, ODI₃, ODI₄ and T90

YOUR DATA· 8 min read

SpO₂, ODI and T90: pairing an oximeter with your CPAP

What a fingertip or ring oximeter adds to your picture, and how to line the two up.

Apnealytics Editorial