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. 2007 Dec;58(3):403-10.
doi: 10.1016/j.lungcan.2007.07.011. Epub 2007 Aug 31.

Sleep and quality of life in long-term lung cancer survivors

Nalaka S Gooneratne  1 , Grace E Dean, Ann E Rogers, J Emeka Nkwuo, James C Coyne, Larry R Kaiser
Affiliations

Sleep and quality of life in long-term lung cancer survivors

Nalaka S Gooneratne et al. Lung Cancer. 2007 Dec.

Abstract

Background: Sleep problems are common in lung cancer survivors, yet little is known about the prevalence, determinants, and effects on quality of life (QoL) of these sleep problems in long-term lung cancer survivors.

Methods: A case-control study design comparing 76 elderly lung cancer survivors (LCS, >5 years post diagnosis with mean survival time of 8 years+/-2.1 years) and 78 elderly non-cancer controls (NCC). Measurements included a standardized questionnaire for sleep (Pittsburgh Sleep Quality Index-PSQI), and analogue scales for dyspnea, pain, and other comorbid symptoms, as well as demographic factors and cancer history.

Results: Overall, 56.6% of LCS had poor sleep (PSQI global score >5) as compared to only 29.5% of NCC (p<0.001), and 49.2% of LCS who did not have sleep difficulties prior to their lung cancer diagnosis ultimately developed them. There was also evidence of significant impairments in sleep efficiency in LCS (78.3%) relative to NCC (89.6%, p<0.001), predominantly due to increased nocturnal awakenings. A single-item analogue scale for sleep quality was not as effective in identifying sleep problems as more specific questions about sleep duration and sleep efficiency. Poor sleep quality was significantly correlated with impairments in quality of life, even when controlling for other factors, such as dyspnea.

Conclusions: Even 8 years after diagnosis, LCS continue to have significant sleep difficulties. By asking specific questions about sleep medication use, nocturnal awakenings and sleep efficiency, health care providers can identify sleep problems that could be treated and potentially improve the quality of life of their patients.

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Conflict of interest statement

Conflict of interest statement No authors have conflicts of interest related to this publication.

Figures

Figure 1
Figure 1
Mean time subjects went to bed and mean time subjects got out of bed for lung cancer survivors (LCS) and non-cancer controls (NCC).
Figure 2
Figure 2
Bar graph showing global Pittsburgh Sleep Quality Index values between lung cancer survivors (LCS) and non-cancer controls (NCC). Values above 5 (indicated by the heavy black line) suggest poor sleep.
See this image and copyright information in PMC

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