Table 5. Comparison of four z score models in children.

Variable	McCrindle	Olivieri	Dallaire	Japanese
Location	Boston, USA	Washington, USA	Quebec, Canada	Japan
Study period (yr)	1987–2000	2007	2001–2008	2010–2011
Age (yr)	0–18	0–20	-	0–18
No. of participants	221	432	1,033	3,851
Statistical model	Nonlinear regression	Nonlinear regression	Nonlinear regression	Lambda-Mu-Sigma model
	Exponential model with BSA	Exponential model with BSA	Square root model with BSA

The range of participants' ages in the Dallaire model is not specified in the reference article.

BSA, body surface area.