Screening questionnaires and wearable algorithms both depend on someone noticing the apnoeas, and the person who notices is almost always the bed partner. A patient who sleeps alone systematically under-reports, and so does one whose partner sleeps through anything. That is a well-known limitation. The less-remembered one is the sleeping arrangement itself.
In a household where three or four people share a room - common across much of Indian practice - the history is often better than a partner's, because more than one person has heard it, and someone will mention that the patient stops breathing. Conversely, a patient who has been moved out of the shared room specifically because of the snoring has given you both a symptom and its severity in a single fact. Ask who sleeps in the room, who has complained, and whether anyone has changed where they sleep because of it. It costs one question and it beats most screening scores.
- Ask who else sleeps in the room, not just whether there is a partner.
- Treat 'he was moved to another room because of the snoring' as a severity marker.
- Ask specifically whether anyone has seen breathing stop, not just heard snoring.
- Record daytime sleepiness with a concrete example - falling asleep at traffic lights, at work - rather than a score alone.
- A patient who sleeps alone needs a lower threshold for objective testing, since the history cannot rule out.
Why it matters
Every sleep apnoea screening tool depends on witnessed events, and whether they were witnessed depends on facts nobody asks about.
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