Table 7.

Age-related serum IgG2 levels in healthy children (mg/dL).

Age group	Number	Geometric mean ± SD	Mean ± SD	Min–max	95% confidence interval
25–36 months	30	137.88 ± 38.59	141.98 ± 38.59	87.6–289	127.57–156.39
3–5 years	30	143.92 ± 50,802	151.95 ± 50.80	73.3–271	132.98–170.92
6–8 years	30	196.57 ± 86.41	213.67 ± 86.41	88.1–408	181.40– 245.93
9–11 years	30	250.67 ± 85.72	265.56 ± 85.72	81–442	233.55–297.57
12–16 years	30	261.62 ± 69,147	270.23 ± 69.14	159–406	244.41–296.05
16–18 years	30	359.76 ± 115,839	375.9 ± 115.83	184–696	332.6–419.15
Total	180	212.48 ± 111,265	236.55 ± 111.26	73.3–696	220.18–252.91

IgG2: Immunoglobulin G2