Key factors in children’s competence to consent to clinical research

BMC Medical Ethics

Table 2 Contribution of child variables to total explained variance in competence judgments

	Corrected Odds Ratio^a	Wald P-value	Cumulative Naegelkerke R square
Age	3.95^b	<0.001	56.4 %
IQ			69.1 %
Low^c	1
Average	6.80	0.007
High	19.24	0.001
SES			70.6 %
Low^c	1
Middle	2.03	0.41
High	4.20	0.17
Male	0.67	0.51	71.1 %
Disease experience			71.4 %
Low^c	1
Medium	1.51	0.52
High	1.21	0.79
Ethnicity			71.5 %
Western European^c	1
Other	0.57	0.69

Contextual variables complexity, risk, parental judgment and decision to participate added another 2.8 % of the variance to a total of 74.3 % explained variance
^aOR for a variable corrected for all other variables in the table
^bOdds ratio for a competent judgment per year older
^cReference category

ISSN: 1472-6939