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. 2008 Sep 15;6:68. doi: 10.1186/1477-7525-6-68

Table 4.

Pearson correlation coefficients of performances of Child-OIDP index (n = 342)

	Eating	Speaking	Cleaning Mouth	Sleeping	Smiling	Emotional status	Studying	Social Contact
Eating	1
Speaking	0.12^b	1
Cleaning mouth	0.30^a	0.10^c	1
Sleeping	0.17^a	0.18^a	0.10^c	1
Smiling	0.23^a	0.17^a	0.32^a	0.01^c	1
Emotional status	0.04^c	0.17^a	0.20^a	0.05^c	0.25^a	1
Studying	0.18^a	0.14^b	0.15^a	0.29^a	0.21^a	0.00^c	1
Social contact	0.08^c	0.23^a	0.20^a	0.07^c	0.21^a	0.24^a	0.25^a	1

^ap < 0.01

^bp < 0.05

^cNot significant