睡眠相後退症候群

Delayed sleep phase disorder - chronic mismatch between a person's normal daily rhythm, compared to other people and societal norms. Article "睡眠相後退症候群" in Japanese Wikipedia has 21.8 points for quality (as of July 1, 2025). The article contains 23 references and 13 sections.

This article has the best quality in English Wikipedia. Also, this article is the most popular in that language version.

Since the creation of article "睡眠相後退症候群", its content was written by 37 registered users of Japanese Wikipedia and edited by 695 registered Wikipedia users in all languages.

The article is cited 47 times in Japanese Wikipedia and cited 990 times in all languages.

The highest Authors Interest rank from 2001:

• Local (Japanese): #6667 in September 2011
• Global: #10571 in May 2003

The highest popularity rank from 2008:

• Local (Japanese): #11627 in May 2009
• Global: #13565 in December 2018

There are 22 language versions for this article in the WikiRank database (of the considered 55 Wikipedia language editions).

The quality and popularity assessment was based on Wikipédia dumps from July 1, 2025 (including revision history and pageviews for previous years).

The table below shows the language versions of the article with the highest quality.

#	Language	Quality grade	Quality score
1	English (en) Delayed sleep phase disorder		72.9369
2	Portuguese (pt) Síndrome do atraso das fases do sono		61.9099
3	German (de) Schlafphasensyndrom		48.1804
4	Chinese (zh) 睡眠相位后移症候群		45.6355
5	Thai (th) ภาวะการนอนหลับล่าช้า		43.8014
6	Ukrainian (uk) Синдром затримки фази сну		41.5698
7	Finnish (fi) Viivästynyt unijakso		38.1865
8	Polish (pl) Zespół opóźnionej fazy snu		37.8524
9	Russian (ru) Синдром задержки фазы сна		35.416
10	Spanish (es) Síndrome de la fase del sueño retrasada		27.8873

More...

The following table shows the most popular language versions of the article.

The most popular language versions of the article "睡眠相後退症候群" in all the time

#	Language	Popularity award	Relative popularity
1	English (en) Delayed sleep phase disorder		5 681 299
2	Japanese (ja) 睡眠相後退症候群		553 600
3	Spanish (es) Síndrome de la fase del sueño retrasada		543 409
4	Russian (ru) Синдром задержки фазы сна		280 086
5	German (de) Schlafphasensyndrom		274 291
6	Chinese (zh) 睡眠相位后移症候群		249 855
7	Portuguese (pt) Síndrome do atraso das fases do sono		182 953
8	Dutch (nl) Vertraagde-slaapfasesyndroom		169 356
9	Polish (pl) Zespół opóźnionej fazy snu		134 358
10	French (fr) Syndrome de retard de phase du sommeil		106 197

More...

The following table shows the language versions of the article with the highest popularity in the last month.

The most popular language versions of the article "睡眠相後退症候群" in June 2025

#	Language	Popularity award	Relative popularity
1	English (en) Delayed sleep phase disorder		14 835
2	Russian (ru) Синдром задержки фазы сна		2 360
3	Japanese (ja) 睡眠相後退症候群		959
4	German (de) Schlafphasensyndrom		942
5	Chinese (zh) 睡眠相位后移症候群		870
6	Dutch (nl) Vertraagde-slaapfasesyndroom		457
7	French (fr) Syndrome de retard de phase du sommeil		421
8	Polish (pl) Zespół opóźnionej fazy snu		405
9	Spanish (es) Síndrome de la fase del sueño retrasada		376
10	Hebrew (he) תסמונת פאזת השינה הדחויה		271

More...

The following table shows the language versions of the article with the highest Authors’ Interest.

Language versions of the article "睡眠相後退症候群" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.

#	Language	AI award	Relative AI
1	English (en) Delayed sleep phase disorder		277
2	German (de) Schlafphasensyndrom		60
3	Dutch (nl) Vertraagde-slaapfasesyndroom		60
4	Chinese (zh) 睡眠相位后移症候群		45
5	Japanese (ja) 睡眠相後退症候群		37
6	Spanish (es) Síndrome de la fase del sueño retrasada		32
7	Hebrew (he) תסמונת פאזת השינה הדחויה		29
8	Italian (it) Sindrome da sonno posticipato		28
9	French (fr) Syndrome de retard de phase du sommeil		21
10	Portuguese (pt) Síndrome do atraso das fases do sono		19

More...

The following table shows the language versions of the article with the highest Authors’ Interest in the last month.

Language versions of the article "睡眠相後退症候群" with the highest AI in June 2025

#	Language	AI award	Relative AI
1	English (en) Delayed sleep phase disorder		1
2	Polish (pl) Zespół opóźnionej fazy snu		1
3	Arabic (ar) اضطراب طور النوم المتأخر		0
4	Azerbaijani (az) Gecikmiş yuxu mərhələsi sindromu		0
5	Czech (cs) Syndrom odkládané spánkové fáze		0
6	Danish (da) Socialt jetlag		0
7	German (de) Schlafphasensyndrom		0
8	Spanish (es) Síndrome de la fase del sueño retrasada		0
9	Persian (fa) اختلال تأخیر در فاز خواب		0
10	Finnish (fi) Viivästynyt unijakso		0

More...

The following table shows the language versions of the article with the highest number of citations.

Language versions of the article "睡眠相後退症候群" with the highest Citation Index (CI)

#	Language	CI award	Relative CI
1	English (en) Delayed sleep phase disorder		194
2	Arabic (ar) اضطراب طور النوم المتأخر		174
3	Chinese (zh) 睡眠相位后移症候群		135
4	Italian (it) Sindrome da sonno posticipato		109
5	Persian (fa) اختلال تأخیر در فاز خواب		68
6	Ukrainian (uk) Синдром затримки фази сну		58
7	Japanese (ja) 睡眠相後退症候群		47
8	Russian (ru) Синдром задержки фазы сна		44
9	French (fr) Syndrome de retard de phase du sommeil		42
10	Dutch (nl) Vertraagde-slaapfasesyndroom		42

More...

#	Language	Value
ar	Arabic اضطراب طور النوم المتأخر
az	Azerbaijani Gecikmiş yuxu mərhələsi sindromu
cs	Czech Syndrom odkládané spánkové fáze
da	Danish Socialt jetlag
de	German Schlafphasensyndrom
en	English Delayed sleep phase disorder
es	Spanish Síndrome de la fase del sueño retrasada
fa	Persian اختلال تأخیر در فاز خواب
fi	Finnish Viivästynyt unijakso
fr	French Syndrome de retard de phase du sommeil
he	Hebrew תסמונת פאזת השינה הדחויה
it	Italian Sindrome da sonno posticipato
ja	Japanese 睡眠相後退症候群
ko	Korean 지연성 수면주기장애
nl	Dutch Vertraagde-slaapfasesyndroom
pl	Polish Zespół opóźnionej fazy snu
pt	Portuguese Síndrome do atraso das fases do sono
ru	Russian Синдром задержки фазы сна
simple	Simple English Delayed sleep phase disorder
th	Thai ภาวะการนอนหลับล่าช้า
uk	Ukrainian Синдром затримки фази сну
zh	Chinese 睡眠相位后移症候群

Best Rank

Japanese: #11627 05.2009

Global: #13565 12.2018

Best Rank

Japanese: #6667 09.2011

Global: #10571 05.2003

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The WikiRank project is intended for automatic relative evaluation of the articles in the various language versions of Wikipedia. At the moment the service allows to compare over 44 million Wikipedia articles in 55 languages. Quality scores of articles are based on Wikipedia dumps from July, 2025. When calculating current popularity and AI of articles data from June 2025 was taken into account. For historical values of popularity and AI WikiRank used data from 2001 to 2025... More information