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. 2019 Aug 19;19:225. doi: 10.1186/s12877-019-1248-2

Table 6.

Comparison of descriptive values of the AIS, ESS, and ISI with the respondents’ age

scale 60–70 years (I) 71–80 years (II) 81–90 years (III) p post-hoc
x¯ SD Me x¯ SD Me x¯ SD Me I-II I-III II-III
AIS 6.79 4.89 5.0 7.47 4.39 7.0 9.20 5.37 8.5 0.156
ESS 6.06 3.86 5.5 6.70 5.18 5.5 6.30 4.06 5.5 0.956
ISI 8.51 5.72 7.0 8.99 5.51 9.0 11.40 5.72 13.0 0.288

Abbreviations: AIS Athens Insomnia Scale, ESS Epworth Sleepiness Scale, ISI Insomnia Severity Index, x¯ mean, Me median, p p-value, SD standard deviation