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Table 2 Psychometric properties of quality of life instruments in long-term breast cancer survivors.

From: A systematic review of quality of life instruments in long-term breast cancer survivors

Instruments Reliability Validity Responsiveness
Disease-specific measures
Body Image and Relationships Scale (BIRS) [14] Internal consistency = 0.94 Convergent and divergent Not Reported
Cancer Rehabilitation Evaluation System Cancer-Short Form (CARES-SF) [15] Internal consistency (for domains, 0.85-0.61) Concurrent Not Reported
European Organization for Research and Treatment of Cancer (EORTC QLQ-C30) [1618] Internal consistency > 0.70 Content, concurrent, discriminant Not Reported
European Organization for Research and Treatment of Cancer-Breast Module (EORTC QLQ-BR23) [19] Internal consistency: American sample (0.70-0.91); Dutch sample (0.57-0.89); Spanish sample (0.46-0.94) Content, construct, criterion-related Dutch &Spanish sample showed responsiveness in side effects & body image; no responsiveness tested in American sample.
Ferrans and Powers's Quality of Life Index-Cancer Version (QLI-CV) [20] Internal consistency = 0.95 Concurrent (criterion-related, r = 0.80), construct. Not Reported
Functional Assessment of Cancer Therapy-Breast (FACT-B) [21] Internal consistency = 0.90
Test-retest = 0.85
Content, construct, concurrent (r = 0.87), divergent, known group Sensitivity to 2-month changes found for FACT-B global, FACT-G global, physical well-being, functional well-being, breast cancer subscale.
Functional Assessment of Cancer Therapy-General (FACT-G) [22] Internal consistency = 0.89
Test-retest = 0.92
Content, construct, divergent, known group. Not Reported
Functional Assessment of Chronic Illness Therapy-Spiritual Well Being Scale (FACIT-SP) [23] Internal consistency = 0.81-0.88 Discriminant, convergent Not Reported
Quality of Life-Cancer Survivors tool (QOL-CS) [24] Internal consistency = 0.93
Test-retest = 0.89
Content, concurrent (r = 0.78), predictive, construct, discriminate Not Reported
Quality of Life in Adult Cancer Survivors Scale (QLACS) [25] Internal consistency (generic = 0.95, cancer-specific = 0.98) Concurrent, retrospective Change in health status
Condition- specific measures
Fatigue Symptom Inventory (FSI) [26] Internal consistency > 0.70 Convergent, divergent, construct Not Reported
Multidimensional Fatigue Symptom Inventory (MFSI) [27] Internal consistency = 0.87-0.92 Convergent and divergent Significant differences in expected direction were found between cancer patients and non-cancer patients.