Reliability and validity of the Pittsburgh Sleep Quality Index in breast cancer patients

Abstract

The unidimensional construct of the European Portuguese version of the PSQI showed adequate reliability and validity among breast cancer patients.

Dimensionality of the Pittsburgh Sleep Quality Index: a systematic review

“…The factor analysis of the PSQI has been reported on diverse samples including university/college students in Nigeria, India, Chili, Chinese, Ethiopia, Peru and Thailand, pregnant women, community dwelling adults and older adults in America, Australia, China, Ethiopia, Spain, Portugal, Iranian health professionals, adolescents and young adults [ 15 – 17 , 23 , 24 , 26 – 28 , 31 , 34 , 36 , 39 , 41 , 44 , 45 , 52 , 53 , 57 – 60 ]. Moreover, it has been reported for patient population with breast cancer, Crohn’s disease, depression, diabetes, women with hot flashes, Taiwanese insomniacs, post-traumatic stress disorder, Trauma exposed veterans, temporo-mandibular disorder, traumatic brain injury, fibromyalgia, arthritis, chronic fatigue syndrome, psychiatric disorders and renal transplant patients [ 25 , 27 , 29 , 30 , 32 , 33 , 35 , 37 , 38 , 40 , 42 , 43 , 46 , 49 , 51 , 61 – 65 ].…”

“…We counted the number of studies reporting any of the following 5 indices: Kaiser-Meyer-Olkin (KMO) Measure of Sampling Adequacy, Bartlett’s sphericity test, determinant score, anti-image, and component correlations (Table 1 ). Eighteen studies reported both the KMO and Bartlett’s sphericity test [ 15 – 17 , 25 , 39 , 43 – 45 , 51 – 53 , 57 – 59 , 61 , 64 , 65 , 67 ], reported inter-item correlations [ 16 , 22 , 24 , 25 , 27 , 29 , 30 , 32 – 34 , 36 , 37 , 41 , 42 , 45 , 46 , 50 , 53 , 57 , 64 – 67 ], and 11 studies did not report any index [ 23 , 26 , 28 , 31 , 35 , 38 , 40 , 49 , 60 , 62 , 63 ].…”

“…Twenty articles did not report having carried out EFA [ 15 , 23 , 26 , 29 , 32 – 38 , 42 , 48 , 50 , 59 , 60 , 62 – 64 , 66 ]. The types of EFA tests used were principal component analysis (PCA) in 18 studies [ 17 , 22 , 24 , 25 , 27 , 28 , 31 , 39 , 41 , 43 – 45 , 49 , 51 , 57 , 58 , 65 , 67 , 68 ], maximum likelihood estimation (MLE) in 6 [ 16 , 17 , 22 , 24 , 40 , 41 , 53 ] and unreported in 2 [ 30 , 52 ] (Table 2 ). The types of rotation used for EFA were orthogonal varimax in 8 studies [ 28 , 39 , 41 , 43 , 44 , 46 , 49 , 52 , 65 ], oblique direct oblimin in 8 [ 16 , 17 , 22 , 24 , 25 , 51 , 53 , 61 ], oblique promax in 5 [ 40 , 45 , 46 , 58 , 65 ], standardized geomin 1 [ 30 ], and unreported...…”

“…Seven studies reported using a Cattell’s scree test to determine the number of factors to retain [ 16 , 17 , 44 , 46 , 58 , 61 , 65 , 69 ]. Fifteen studies employed the Kaiser criterion of eigenvalue greater than one [ 16 , 17 , 25 , 27 , 28 , 40 , 43 – 46 , 49 , 51 , 58 , 61 , 65 ].…”

Evaluation of sleep quality in adolescent patients with osteosarcoma using Pittsburgh Sleep Quality Index

“…Studies of sleep disturbance commonly used self-report instruments to provide a global evaluation of patients' sleep quality (Hanish, Lin-Dyken, & Han, 2017). The Pittsburgh Sleep Quality Index (PSQI) is a well-established measure of sleep disturbance that has been widely applied across a range of cancer populations, including breast cancer (Fontes et al, 2017;Otte, Rand, Carpenter, Russell, & Champion, 2013), lung cancer (Dean et al, 2013) and so on. It is composed of 19 items, yielding a total score that allows researchers to determine sleep dysfunction over a 1-month period (Buysse, Reynolds, Monk, Berman, & Kupfer, 1989).…”