PT  - JOURNAL ARTICLE
AU  - Hady Atef
AU  - Zinab Helmy
AU  - Sameh Elameen
AU  - Abeer Farghaly
TI  - Measuring Sleep quality in older patients post coronary artery bypass graft surgeries:a comparison using subjective and objective methods
AID  - 10.1183/13993003.congress-2019.PA891
DP  - 2019 Sep 28
TA  - European Respiratory Journal
PG  - PA891
VI  - 54
IP  - suppl 63
4099  - http://erj.ersjournals.com/content/54/suppl_63/PA891.short
4100  - http://erj.ersjournals.com/content/54/suppl_63/PA891.full
SO  - Eur Respir J2019 Sep 28; 54
AB  - Background: Sleep quality is a complex construct to evaluate empirically, and yet the Pittsburg Sleep Quality Index (PSQI) is commonly used in studies as their only measure of sleep quality. Furthermore, the PSQI may not be the best sleep quality measure for older adults post coronary artery bypass graft (CABG), due to its reliance on the cognitive capacity to reflect on the past month.Purpose: The present study was conducted to compare the PSQI’s predictive validity as a subjective measure of sleep quality with an objective sleep quality (as measured by actigraphy).Methods: 80 participants aged 50-65years-who underwent coronary artery bypass graft CABG since 6 weeks -were examined for their sleep quality through 10 weeks by using the PSQI and the actigraph. The actigraph (Actiwatch Minimitter Company, INC - Sunriver, OR, USA) was placed on the non-dominant wrist and activities were monitored continuously while being recorded at one minute intervals. The participants kept the device for a period of 96 hours before the first and last day of the study.Results: Our results suggest perceived sleep quality is quite different from objective reality, at least for this group. Importantly, we show this difference is unrelated to age, gender, and education. Previous studies have shown the PSQI to be a valuable tool for assessing subjective sleep quality; however, our findings indicate for older adults the PSQI should not be used as a substitute for actigraphy, or vice versa.Conclusion: The best practice is to include both subjective and objective measures when examining sleep quality in older adults (i.e., the PSQI, and actigraphy).FootnotesCite this article as: European Respiratory Journal 2019; 54: Suppl. 63, PA891.This is an ERS International Congress abstract. No full-text version is available. Further material to accompany this abstract may be available at www.ers-education.org (ERS member access only).