Table 3. Correlation between SPO₂ and PI .

			Right Hand Sat	Right Hand PI
Healthy	Right hand sat	Pearson Correlation	1	-0.060
		Sig. (2-tailed)		0.064
	Right hand PI	Pearson Correlation	-0.060	1
		Sig. (2-tailed)	0.064
CHD	Right hand sat	Pearson Correlation	1	-0.282*
		Sig. (2-tailed)		0.040
	Right hand PI	Pearson Correlation	-0.282*	1
		Sig. (2-tailed)	0.040
Healthy	Foot sat	Pearson Correlation	1	-0.069*
		Sig. (2-tailed)		0.034
	Foot PI	Pearson Correlation	-0.069*	1
		Sig. (2-tailed)	0.034
CHD	Foo. sat	Pearson Correlation	1	-0.169
		Sig. (2-tailed)		0.227
	Foot PI	Pearson Correlation	-0.169	1
		Sig. (2-tailed)	0.227

* Correlation is significant at the 0.05 level (2-tailed).

CHD, Congenital heart defect, PI, Perfusion index.