Japan: number of patients with schizotypal or delusional disorder by gender

In 2020, around 420 thousand male and 460 female patients were treated for schizophrenia, schizotypal personality disorder, or delusional disorder in Japan. That year, the overall patient number increased to 880 thousand from 793 thousand in 2017.

Number of patients receiving treatments for schizophrenia, schizotypal personality disorder, or delusional disorder in Japan from 1996 to 2020, by gender (in 1,000s)

Characteristic	Male	Female
-	-	-
-	-	-
-	-	-
-	-	-
-	-	-
-	-	-
-	-	-
-	-	-
-	-	-

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Release date

June 2022

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Region

Japan

Survey time period

1996 to 2020; as of October of each year

Supplementary notes

*Excluding figures from Ishinomaki and Kesennuma medical care zone in Miyagi Prefecture and Fukushima Prefecture.

The survey was conducted at medical facilities on one designated date set for each institution from three days in October.

The number of patients refers to those who were continuously receiving medical treatment (including those who did not receive medical treatment at medical institutions on the dates of the survey) calculated by the following formula:
number of patients receiving medical treatment = estimated number of inpatients + estimated number of initial visit outpatients + (estimated number of return visit outpatients × average interval since last visit × adjustment factor (6/7))

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