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Table 4 Quality of Life Index Scores Reported by HD Sample in This Study and by HD Patients Studied by Ferrans/Powers*

From: Nocturnal sleep, daytime sleepiness, and quality of life in stable patients on hemodialysis

Scale Study Sample (n = 46) Ferrans &Powers Study (n = 349)*
  Mean (SD) Range Internal Consistency** Mean (SD) Range Internal consistency
Health & Functioning Subscale *** 21.1 (4.7) 10.29–29.54 0.80 18.64 (5.7) 2.8–30.0 0.87
Social & Economic Subscale 22.0 (4.8) 10.71–30.0 0.94 21.29 (5.4) 3.2–30.0 0.82
Psychological & Spiritual Subscale *** 24.5 (4.4) 15.07–30.0 0.81 21.60 (6.7) 0.9–30.0 0.90
Family Subscale 26.8 (3.5) 18.0–30.0 0.91 25.25 (5.1) 0.0–30.0 0.77
Total QOLI Score *** 22.8 (4.0) 14.53–29.67 0.91 20.7 (4.8) 7.3–29.8 0.90
  1. * [38], ** Cronbach's alphas, *** p = 0.005, 0.007, 0.005 respectively: t-test