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Equation 1 Formulae for computing the Flesch-Reading-Ease-Score for the English [33] and the German FROM-16 [34]

From: Validation of the German version of the Family Reported Outcome Measure (FROM-16) to assess the impact of disease on the partner or family member

ENGLISH:

 

FRE = 206.835 − 84.6 * WL − 1.015 * SL

 

GERMAN:

 

FRE = 180 − SL − WL * 58.5

 

WL = average word length in syllables

 

(= number of syllables divided by number of words)

 

SL = average sentence length

 

(= number of words divided by number of sentences)