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Table 2 Descriptive statistics for AIS, ESS, and ISI

From: Sleep disorders among educationally active elderly people in Bialystok, Poland: a cross-sectional study

scale

\( \overline{x} \)

Me

Min

Max

SD

AIS

7.20

6

0

24

4.73

ESS

6.34

5.5

0

23

4.44

ISI

8.86

8

0

26

5.64

  1. Abbreviations: AIS Athens Insomnia Scale, ESS Epworth Sleepiness Scale, ISI Insomnia Severity Index, \( \overline{x} \) mean, Max maximum, Me median, Min minimum, SD standard deviation