Table 1.

Study population statistics.

	Age groups	Average number of patients per group	Average number of observations per group	% male
Heart rate	0–30 days	166	2,224,349	56
	0–18 years	317	30,024,184	54
Blood pressure	1–30 days	104	1,461,373	59
	0–18 years	214	13,794,392	53