Topics tagged with "Spatial variation in prevalence"

Spatial variation in prevalence

What is spatial variation in the prevalence of PTSD? Prevalence represents the overall proportion of individuals in a population who have the disorder of interest. It is different from incidence, which represents only the new cases that have developed over a particular time period. Point prevalence is the proportion of individuals in a population who have the disorder at a given point in time (e.g., at one-month post-trauma), while period prevalence is the proportion of individuals in a population who have the disorder over specific time periods (e.g., one to two months post-trauma). Lifetime prevalence is the proportion of individuals…

Spatial variation in prevalence

What is spatial variation in the prevalence of bipolar disorder? Prevalence rates of bipolar disorder may differ across regions. Prevalence quantifies the proportion of individuals in a population who have a disease during a specific time period, while incidence refers to the number of new cases of disease that develop in a population during a specific time period. In disorders of short duration, incidence and prevalence rates may be similar, however with disorders of long duration such as with bipolar disorder there can be variation between the two. Point prevalence is the proportion of individuals who manifest a disorder at…

Spatial variation in prevalence

What is spatial variation in the prevalence of schizophrenia? Prevalence measures the proportion of individuals who have a disorder at a particular point in time (point prevalence) or during a specified period (annual prevalence, lifetime prevalence) and this may vary across regions. It is distinct from incidence, which refers to how many new cases there are per population in a specified time period. Lifetime prevalence is the number of individuals in a population that at some point in their life have experienced schizophrenia compared to the total number of individuals. What is the evidence for spatial variation in prevalence rates…

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