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When describing
or comparing symptom prevalence and incidence, the results can
be affected by such factors as:
- Time
(for example time of day, time period included);
- Place
(for example, home, hospital, open plan hospital ward or in
a private room, out-patient clinic); and
- Person
(this includes both the sociodemographic and clinical circumstances
of the patient, for example, age, stage of disease, and the
person who collects the data).
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