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

Reulen, Raoul C; Zeegers, Maurice P; Jenkinson, Crispin; Lancashire, Emma R; Winter, David L; Jenney, Meriel E; Hawkins, Mike M

doi:10.1186/1477-7525-4-77

Table 2 Item-internal consistency reliability coefficients and scaling failures (indicated by one or more stars).

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	0.69–0.88	0.75–0.82	0.81	0.61–0.81	0.71–0.74	0.67	0.70–0.76	0.52–0.73*
Cancer diagnosis
leukaemia	0.64–0.84	0.74–0.80	0.82	0.63–0.80	0.69–0.71	0.59**	0.67–0.74	0.47–0.72
Hodgkin's disease	0.62–0.84	0.72–0.83	0.79	0.51–0.78	0.73–0.75	0.74	0.70–0.74	0.58–0.75*
non-Hodgkin's	0.640.84	0.73–0.83	0.81	0.61–0.81	0.75–0.77	0.67	0.69–0.75	0.53–0.73*
CNS	0.70–0.89	0.75–0.82	0.82	0.59–0.81	0.69–0.73	0.67	0.73–0.79	0.48–0.69
neuroblastoma	0.64–0.90	0.79–0.83	0.82	0.58–0.84	0.70–0.74	0.62	0.66–0.75	0.51–0.76
retinoblastoma	0.65–0.89	0.69–0.81	0.79	0.55–0.78	0.70–0.73	0.61	0.67–0.73	0.54–0.76
Wilms' tumour	0.63–0.84	0.72–0.81	0.80	0.61–0.82	0.70–0.75	0.68	0.69–0.77	0.54–0.75*
bone tumour	0.48–0.86	0.75–0.84	0.82	0.49–0.81	0.71–0.76	0.71	0.80–0.85	0.56–0.76
soft tissue sarcoma	0.56–0.86	0.70–0.80	0.80	0.56–0.82	0.73–0.77	0.70	0.68–0.78	0.58–0.80
other	0.62–0.84	0.78–0.84	0.79	0.59–0.82	0.72–0.76	0.69	0.68–0.74	0.54–0.73
Sex
Males	0.68–0.88	0.73–0.81	0.79	0.57–0.80	0.71–0.74	0.66	0.70–0.75	0.51–0.72
Females	0.68–0.88	0.76–0.83	0.83	0.58–0.82	0.70–0.73	0.67	0.71–0.77	0.51–0.73*
Age ^†
16–19	0.66–0.88	0.66–0.74	0.77	0.58–0.80	0.66–0.71	0.57**	0.69–0.65	0.48–0.70*
20–29	0.68–0.87	0.73–0.81	0.80	0.59–0.81	0.71–0.75	0.65	0.69–0.76	0.53–0.74*
30–39	0.68–0.87	0.76–0.84	0.83	0.56–0.81	0.72–0.75	0.69	0.72–0.77	0.53–0.74*
40–49	0.71–0.90	0.80–0.85	0.81	0.59–0.83	0.74–0.76	0.73	0.72–0.81	0.55–0.74
50+	0.62–0.88	0.76–0.87	0.83	0.55–0.81	0.66–0.74	0.69	0.78–0.82	0.49–0.71
Age at diagnosis
0–3	0.69–0.88	0.74–0.82	0.80	0.58–0.81	0.71–0.72	0.64**	0.69–0.76	0.50–0.72*
4–7	0.68–0.88	0.72–0.80	0.82	0.57–0.80	0.69–0.75	0.63**	0.69–0.75	0.52–0.72
8–11	0.68–0.88	0.76–0.83	0.82	0.58–0.83	0.73–0.75	0.70	0.73–0.77	0.52–0.74
12–16	0.64–0.88	0.78–0.84	0.81	0.56–0.81	0.72–0.75	0.71	0.71–0.78	0.55–0.74

*Scaling failure:item 9d correlated higher with EV than with MH **Scaling failure: item 6 correlated higher with RE than with SF
^†Age at questionnaire completion
PF: Physical Functioning; RP: Role-Limitation Physical; BP; Bodily Pain; GH: General Health Perception; EV: Energy/Vitality;
SF: Social Functioning; RE: Role-Limitation Emotional: MH: Mental Health

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ISSN: 1477-7525

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