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Table 3 Internal consistency reliability coefficients (Cronbach's alpha).

From: The use of the SF-36 questionnaire in adult survivors of childhood cancer: evaluation of data quality, score reliability, and scaling assumptions

  PF RP BP GH EV SF RE MH
all survivors 0.95 0.91 0.87 0.87 0.87 0.79 0.86 0.84
Cancer Diagnosis         
leukaemia 0.94 0.90 0.87 0.87 0.86 0.73 0.84 0.82
Hodgkin's disease 0.93 0.90 0.84 0.84 0.88 0.85 0.85 0.86
non-Hodgkin's 0.94 0.90 0.86 0.87 0.89 0.80 0.84 0.85
CNS 0.96 0.91 0.88 0.88 0.86 0.78 0.88 0.92
neuroblastoma 0.95 0.91 0.88 0.87 0.87 0.76 0.83 0.85
retinoblastoma 0.95 0.89 0.85 0.85 0.87 0.75 0.84 0.86
Wilms' tumour 0.93 0.90 0.86 0.87 0.87 0.81 0.86 0.85
bone tumour 0.93 0.91 0.89 0.85 0.88 0.83 0.91 0.85
soft tissue sarcoma 0.94 0.89 0.86 0.87 0.88 0.82 0.86 0.86
other 0.94 0.92 0.84 0.87 0.88 0.81 0.83 0.85
Sex         
Males 0.95 0.90 0.85 0.86 0.87 0.78 0.85 0.83
Females 0.95 0.91 0.88 0.88 0.87 0.79 0.86 0.84
Age*         
16–19 0.95 0.86 0.82 0.85 0.85 0.72 0.82 0.81
20–29 0.95 0.90 0.85 0.87 0.87 0.78 0.85 0.84
30–39 0.95 0.91 0.88 0.87 0.88 0.81 0.86 0.85
40–49 0.96 0.93 0.88 0.88 0.88 0.82 0.88 0.84
50+ 0.95 0.93 0.89 0.87 0.86 0.80 0.90 0.82
Age at diagnosis         
0–3 0.95 0.90 0.86 0.87 0.87 0.77 0.85 0.83
4–7 0.95 0.90 0.87 0.87 0.86 0.76 0.85 0.84
8–11 0.95 0.91 0.87 0.87 0.88 0.81 0.87 0.84
12–16 0.95 0.92 0.87 0.87 0.88 0.82 0.87 0.85
  1. *Age at questionnaire completion
  2. PF: Physical Functioning; RP: Role-Limitation Physical; BP; Bodily Pain;
  3. GH: General Health Perception; EV: Energy/Vitality; SF: Social Functioning;
  4. RE: Role-Limitation Emotional: MH: Mental Health