Psychometric properties of KIDSCREEN-27 among childhood cancer survivors and age matched peers: a Rasch analysis

Table 2 Results from the Rasch analysis of the psychometric properites of KIDSCREEN-27 in childhood cancer survivors (n = 63)

	Physical well-being (5 items) N = 63	Psychological well-being (7 items) N = 63	Autonomy & parent relations (7 items) N = 63	Social support & peers (4 items) N = 63	School environment (4 items) N = 49 ^e
Number of responses included in the analyses, n	305	441	441	252	195
Possible responses if no missing values (n)	(315)	(441)	(441)	(252)	(196)
Item misfit, n	2^a,b	0	1^c	1^d	0
Variance explained, %	57.7	60.2	39.8	52.6	64.0
Unexplained in 1st contrast, %	13.4	15.1	16.6	18.4	15.7
Person misfit, n (%)	2 (3)	5 (8)	2 (3)	3 (5)	0
Ceiling, n (%)	1 (2)	2 (3)	6 (10)	6 (10)	5 (8)
Floor, n (%)	0	0	0	1(2)	1(2)

^aHave you felt fit and well?
^bHave you been able to run well?
^cHave your parent(s) treated you fairly?
^dHave you been able to rely on your friends?
^eN = 49 due to n = 4, not attending school the previous week and n = 10, not applicable.

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