TABLE 1.

IgE levels by population as reported in the literature

Region	Population	G. Mean (IU ml–1)	Reference	n	Ages
S.A.	Multiple indigenous groups, Venezuela	13,088	Lynch et al., 1983	274	18.5 ± 13.6
S.A.	Waorani, Ecuador	10,153a	Kaplan et al., 1980	227	all ages
S.A.	Dicuron (Waorani), Ecuador	10,572a	Kron et al., 2000	31	15–75
S.A.	Waorani, Ecuador	9,806	Buckley et al., 1985	229	all ages
S.A.	Warao, Venezuela	7,004	Hagel et al., 2006	159	8.6 ± 2.5
S.A.	Dicuron (Waorani), Lago Agrio, Ecuador	4,143a	Kron et al., 2000	8	adults?
Asia	Indonesia	3,162	Terhell et al., 2001	167	0 to 10 and adults
Asia	Tibetan (living in Nepal)	2,930	Buckley et al., 1985	39	all ages?
Asia	Indonesia	2,570	Wahyuni et al., 2005	466	5 to 84
S.A.	‘Slum” of Caracas, Venezuela	2,423	Hagel et al., 1993; 1995	85	8.5 ± 2.5
Africa	Liberia	2,123	Perlmann et al., 1994	57	adults
S.A.	Shuar, Ecuador	1,196	This study	163	2 to 67
S.A.	Quichua, Ecuador	1,189a	Kron et al., 2000	16	adults?
S.A.	Brazil	1,047	Grant et al., 2008	822	26.9 ± 18.7
S.A.	Pichincha, Ecuador	1,004	Cooper et al., 2008	1,632	grades 2 to 7
Africa	Ethiopian Born (1–3 months in Israel)	1,016a	Iancovici Kidon et al., 2005	11	13.7 ± 1.0
Africa	Ethiopian Born (One year in Israel)	1,292a	Iancovici Kidon et al., 2005	11	14.7 ± 1.0
Africa	Nigeria	973	McSharry et al., 1999	92	5 to 15
Africa	Gambia (Rural school children)	962	Godfrey, 1975	131	schoolchildren
Asia	Thailand	647	Perlmann et al., 1994	23	adults
S.A.	School children, Venezuela	450	Hagel et al., 2006	70	7.6 ± 2.5
Africa	Tanzania	397a	Perlmann et al., 1999	230	0 to 29
Africa	Gambia (Urban school children)	368	Godfrey, 1975	60	schoolchildren
Africa	Gambia (Rural)	364	Nyan et al., 2001	142?	>15
Africa	Gambia (Urban)	332	Nyan et al., 2001	142?	>15
Africa	Madagascar	301	Perlmann et al., 1994	54	2 to 35
Africa	Ethiopian Born (>7 years in Israel)	135a	Iancovici Kidon et al., 2005	10	14.7 ± 1.0
N.A.	North Carolina, U.S.A.	108	Buckley et al., 1985	84	18–35
Europe	Croatia	107b	Dodig et al., 2006	7,975	0 to 16
M.E.	Ethiopian Israeli Born	54a	Iancovici Kidon et al., 2005	15	6.4 ± 2.3
Europe	Greek	54a,b	Petridou et al., 1995	484	1 to 14
N.A.	U.S.A. (Multiple Ethnicities)	52	NHANES 2005–2006c	8,336	1 to 85
N.A.	Canada (only nonallergic)	12	Holford-Strevens et al., 1984	1,814	20–65
Europe	Sweden (only nonatopic)	8	Perlmann et al., 1994	38	not given

Region abbreviations: S.A. = South America, N.A. = North America, M.E. = Middle East.

^aThe published arithmetic mean was converted to geometric mean under the assumption of a lognormal distribution using: $\mathrm{G}.\mathrm{M}.=e^{(\ln \left(\stackrel{‒}{x}\right)+\frac{1}{2}\ln (1+({\sigma }^2∕{\stackrel{‒}{x}}^2)))}$ where x̄ is the arithmetic mean and σ is the standard deviation.

^bTwo or more reported groups were combined to form a single population estimate by converting to log IgE, calculating sample size weighted average log IgE and then converting back to geometric mean.

^cNHANES data calculated directly from NHANES data files at www.cdc.gov/nchs/nhanes/nhanes2005-2006/nhanes05_06.htm.