Table 1.

Readability level according to Flesch-Kincaid Formula

Level of the text	Mean sentence length	Mean number of syllables	Level of the text (numerical)	Estimated level
Very easy	8 and lower	123 and lower	90–100	5
Easy	11	131	80–90	6
Quite easy	14	139	70–80	7
Standard	17	147	60–70	8–9
Quite difficult	21	155	50–60	10–11
Difficult	25	167	30–50	13–16
Very difficult	29 +	192 +	0–30	adults