Calculation of an Estimate of Exclusively Same-Gender Oriented Swingers in the Age Group 35 to 50 Years on Joyclub
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Method
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* Step 1a: Detection of member profiles on the website joyclub.de which meet the relevant filter criteria:  
	* Verified profile,  
	* profile contains a picture,  
	* profile owner self-declared to be swinger,  
	* declared to be *only* `homosexuell` (this is the German term for 'exclusively same-gender oriented'),  
	* age 35 to 50, and  
	* residence in Germany.  
* Step 1b: Calculate the total number of persons involved.  
* Step 2a: Retrieval from database `ResidentsData restricted`(detected swingers in representative counties; access restricted) which meet all of the following filter criteria:
	* Verified profile,  
	* profile contains a picture,  
	* profile owner self-declared to be swinger,  
	* age 35 to 50,  
	* residence in one of the representative counties.  
* Step 2b: Calculate the total number of the persons involved.
* Step 3a: Calculate the total population in the representative counties.
* Step 3b: Determine the total population of Germany from the same dataset which the county-related population data in Step 3a derive from.
* Step 4: Calculate the population of the representative counties as a percentage of the total population of Germany.
* Step 5: According to the proportion of the population (result of step 4), the figure determined in step 2b is extrapolated to the total population.
* Step 6: The proportion of the number of persons (result of step 1b) in the extrapolated number of detected swingers in the total population of Germany (result of step 5) is determined.


Results
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* Step 1a: 56 women; 73 men; 14 persons in seven couples. Retrieval on 25 October 2023.
* Step 1b: 143 persons.
* Step 2a: 1,550 women; 2,435 men.
* Step 2b: Total 3,985 persons.
* Step 3a: 4,942,845 inhabitants.
* Step 3b: 83,237,124 inhabitants (Statistisches Bundesamt [Destatis], 2022).
* Step 4: 5.94%.
* Step 5: 67,107 persons.
* Step 6: 0.21%.


Reference
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Statistisches Bundesamt [Destatis]. (2022). *Daten aus dem Gemeindeverzeichnis : Kreisfreie Städte und Landkreise nach Fläche, Bevölkerung und Bevölkerungsdichte : Gebietsstand: 31.12.2021* [Data from the directory of municipalities : Cities and rural districts by area, population and population density : As of: 31.12.2021] (Herausgebergemeinschaft Statistische Ämter des Bundes und der Länder, Ed.) [Dataset]. https://www.destatis.de/DE/Themen/Laender-Regionen/Regionales/Gemeindeverzeichnis/Administrativ/Archiv/Standardtabellen/04_KreiseVorjahr.xlsx?__blob=publicationFile
