Table 2.

Prevalence of MGUS among male farmers in the BEEA study and demographically similar populations in NHANES and Olmsted County, Minnesota.

Age group (y)	BEEA Studya		NHANESb	Olmsted County, Minnesotac
	MGUS/Overall	Prevalence (%) (95% CI)	Prevalence (%) (95% CI)	Prevalence (%) (95% CI)
50–59	23/525	4.4 (2.6, 6.2)	0.6 (0.3, 1.1)	2.0 (1.6, 2.5)
60–69	42/579	7.3 (5.1, 9.4)	3.4 (2.3, 4.9)	3.7 (3.0, 4.4)
70–79	44/424	10.4 (7.3, 13.4)	5.2 (3.9, 6.9)	5.6 (4.5, 6.7)
$\ge 80$	20/110	18.2 (10.2, 26.2)	6.1 (4.4, 8.4)	8.3 (6.2, 10.4)
Totald	129/1,638	7.7 (6.3, 9.1)e	2.8 (2.4, 3.2)	3.8 (3.4, 4.2)

Notes: AHS, Agricultural Health Study; BEEA, Biomarkers of Exposure and Effect in Agriculture; CI, confidence interval; MGUS, monoclonal gammopathy of undetermined significance; NHANES, National Health and Nutrition Examination Survey.

^aEstimated prevalence among participants in the BEEA study, which included male AHS farmers $\ge 50\text{\hspace{0.17em}years}$ of age with samples collected in 2010–2017 (Hofmann et al. 2015).

^bEstimated prevalence among White males $\ge 50\text{\hspace{0.17em}years}$ of age in NHANES for the years 1988–1994 and 1999–2004 (Landgren et al. 2014).

^cEstimated prevalence among males $\ge 50\text{\hspace{0.17em}years}$ of age in the mostly White population of Olmsted County, Minnesota, for the years 1995–2001 (Kyle et al. 2006).

^dAge-standardized to the U.S. population of White males $\ge 50\text{\hspace{0.17em}years}$ of age based on the 2000 U.S. Census population.

^e$p<0.001$ for age-standardized MGUS prevalence in the BEEA study compared with both the NHANES and Olmsted County populations.