Sleep Disorders
Topic overview. Based on 33333 on-topic pages. [sleep-disorders directory]
Significant concepts: 
type of sleep, occur during sleep quality, sleep aid, hour of sleep, sleep apnea, sleep, some people, side effect, oxygen level, sleep advice, time during the night, sleep medicine, weight gain, experience sleep each night, sleep center.
Most relevant domains
Most relevant domains based on cumulative page relevance to the topic as defined by example links and on the number of relevant domains linking to them.
| domain | | | | | | | |
|---|---|---|---|---|---|---|---|
http://sleepfoundation.org/  | 1 | 187 | 187 | 981 | 0.99 | 2.82 | sleepfoundation.org |
| http://oup.com/ | 2 | 326 | 359 | 1036 | 0.96 | 1.75 | oup.com |
| http://harvard.edu/ | 3 | 273 | 347 | 578 | 0.97 | 2.12 | harvard.edu |
| http://sleep.org/ | 4 | 257 | 258 | 479 | 0.99 | 1.66 | sleep.org |
| http://semanticscholar.org/ | 5 | 302 | 314 | 1966 | 0.97 | 1.32 | semanticscholar.org |
| http://sleepscholar.com/ | 6 | 300 | 300 | 425 | 1 | 1.2 | sleepscholar.com |
| http://sleepassociation.org/ | 7 | 222 | 222 | 420 | 0.99 | 1.6 | sleepassociation.org |
| http://sleepjunkies.com/ | 8 | 245 | 245 | 320 | 1 | 1.31 | sleepjunkies.com |
| http://alaskasleep.com/ | 9 | 259 | 259 | 354 | 1 | 1.22 | alaskasleep.com |
| http://thesleepdoctor.com/ | 10 | 242 | 242 | 851 | 0.99 | 1.3 | thesleepdoctor.com |
Atext
Most frequent phrases in anchor texts of links found in this topical graph .
| atext | | | |
|---|---|---|---|
| pubmed | 5847 | 389.02 | |
| crossref | 3540 | 234.12 | |
| sleep | 850 | 48.7 | |
| pubmedcentral | 681 | 45.45 | |
| read more | 564 | 39.1 | |
| sleep apnea | 494 | 34.07 | |
| insomnia | 496 | 31.77 | |
| view article | 437 | 29 | |
| study | 323 | 22.3 | |
| health | 544 | 22.26 |
Keyword ideas
Common word stems found in on-topic page titles.
| word | |
|---|---|
| sleep | |
| apnea | |
| disord | |
| health | |
| babi | |
| archiv | |
| medicin | |
| center | |
| night | |
| blog |
Popular pages
On-topic pages with highest topical PageRank.
Popular prospect pages
On-topic pages with highest topical PageRank having a few outgoing links and domains.
Hubs
Pages with most links towards other likely on-topic pages.
Domains with most linking domains
Relevant domains with most other relevant domains linking to them.
| domain | | | |
|---|---|---|---|
| http://nih.gov/ | 367 | 719.02 | nih.gov |
| http://amazon.com/ | 182 | 47.15 | amazon.com |
| http://sleepfoundation.org/ | 158 | 33.68 | sleepfoundation.org |
| http://youtube.com/ | 121 | 16.19 | youtube.com |
| http://aasmnet.org/ | 111 | 21.23 | aasmnet.org |
| http://facebook.com/ | 109 | 13.05 | facebook.com |
| http://huffingtonpost.com/ | 107 | 17.5 | huffingtonpost.com |
| http://webmd.com/ | 106 | 24.37 | webmd.com |
| http://nytimes.com/ | 102 | 12.69 | nytimes.com |
| http://wiley.com/ | 95 | 18.52 | wiley.com |