User:RexxS/Readability

This site http://www.read-able.com/ provides a readability tool. I'm investigating its reliability for determining readability of Wikipedia articles.

Flesch Kincaid Reading Ease
Based on a 0-100 scale. A high score means the text is easier to read. Low scores suggest the text is complicated to understand. 206.835 - 1.015 x (words/sentences) - 84.6 x (syllables/words)

A value between 60 and 80 should be easy for a 12 to 15 year old to understand.

Grade Level indicators
These equate the readability of the text to the US schools grade level system.

Flesch Kincaid Grade Level
0.39 x (words/sentences) + 11.8 x (syllables/words) - 15.59

Gunning Fog Score
0.4 x ( (words/sentences) + 100 x (complexWords/words) )

SMOG Index
1.0430 x sqrt( 30 x complexWords/sentences ) + 3.1291

Coleman Liau Index
5.89 x (characters/words) - 0.3 x (sentences/words) - 15.8

Automated Readability Index (ARI)
4.71 x (characters/words) + 0.5 x (words/sentences) - 21.43

Coleman Liau and ARI rely on counting characters, words and sentence. The other indices consider number of syllables and complex words (polysyllabics - with 3 or more syllables) too. Opinions vary on which type are the most accurate. It is more difficult to automate the counting of syllable as the English language does not comply to strict standards!

Bare text
Oculodentodigital syndrome (ODD syndrome) is an extremely rare genetic condition that typically results in small eyes, underdeveloped teeth, and syndactyly and malformation of the fourth and fifth fingers. It has also been called oculo-dento-digital syndrome, oculodentodigital dysplasia (ODDD), and oculodentoosseous dysplasia (ODOD). It is considered a kind of ectodermal dysplasia.

Presentation

People with ODD syndrome often have a characteristic appearance. Visible features of the condition include:


 * small teeth that are prone to caries because of underdeveloped tooth enamel;
 * a long, thin nose;
 * unusually small eyes; and
 * type III syndactyly of the fourth and fifth fingers.

Iris atrophy and glaucoma are more common than average.[1] The size of the eyes often interferes with learning to read; special eyeglasses may be required. Hair may be fine, thin, dry, or fragile; in some families, it is curly.

Neurologic abnormalities may be seen in adults. The neurologic changes may appear earlier in each subsequent generation and can include abnormal white matter, conductive deafness, and various kinds of paresis, including ataxia, spastic paraplegia, difficulty controlling the eyes, and bladder and bowel disturbances.

Genetics

ODD is commonly an autosomal dominant condition, but can be inherited as a recessive trait. It is generally believed to be caused by a mutation in the gene GJA1, which codes for the gap junction protein connexin 43. Slightly different mutations in this gene may explain the different way the condition manifests in different families. Most people inherit this condition from one of their parents, but new cases do arise through novel mutations. The mutation has high penetrance and variable expression, which means that nearly all people with the gene show signs of the condition, but these signs can range from very mild to very obvious.

Epidemiology

The actual incidence of this disease is not known, but only 243 cases have been reported in the scientific literature, suggesting an incidence of on the order of one affected person in ten million people.

Results
This page has an average grade level of about 14.

Readability Indices
 * Flesch Kincaid Reading Ease 	38.6
 * Flesch Kincaid Grade Level 	12.9
 * Gunning Fog Score 	17.3
 * SMOG Index 	12.7
 * Coleman Liau Index 	15
 * Automated Readability Index 	13.4

Text Statistics
 * No. of sentences 	16
 * No. of words 	327
 * No. of complex words 	77
 * Percent of complex words 	23.55%
 * Average words per sentence 	20.44
 * Average syllables per word 	1.74