Partial canonical correlation analysis on the association between quality of sleep and quality of life among residents in Suzhou city / 中华流行病学杂志

ABSTRACT

Objective To explore the association between quality of sleep and quality of life among residents of Suzhou city.Methods A total of 3225 residents at the age of 18-55 years old in Suzhou city were selected through a clustered sampling method.All the participants were comprehensively evaluated on their quality of sleep by Pittsburgh Sleep Quality Index (PSQI) and on their quality of life (QOL) by SF-36 quality of life scale.Partial canonical correlation analysis was performed.Results Negative relationships were noticed between all the dimensions of sleep quality white all the QOL domains remained significant when the confounding effect of age,gender,marital status,occupation and cultural level were adjusted.The first pair of canonical correlation variances showed statistically significant differences,with 0.7978 of canonical correlation coefficient,1.7505 of eigenvalue,and 92.43％ of proportion.Data on daytime dysfunction,sleep disturbances and subjective sleep quality were inversely associated with factors as vitality,general health perceptions and mental health,respectively,after controlling for covariates.The inverse relationship between the quality of sleep and the quality of life mainly manifested the following aspectsthe association between the status of daytime dysfunction,sleep disturbances,subjective quality of sleep and vitality,general health perceptions and mental health.Conclusion Quality of sleep had influenced the quality of life,overall health and mental health.Daytime dysfunction,sleep disturbances and subjective sleep quality seemed the main factors in Suzhou city.Intervention programs related to improving the sleep need to be popularized among the residents,so as to make the quality of life better.