Blood Donation Rates in the United States 1999–2016: From the National Health and Nutrition Examination Survey (NHANES)

John P. Twarog; Ashley T. Russo; Tara C. McElroy; Elizabet Peraj; Martin P. McGrath; Austin C. Davidow

doi:10.3122/jabfm.2019.05.180378

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Table 1.

Trends in Recent Blood Donations across the United States Adult Population, 1999 to 2016

Category	Unweighted N^*^†	Weighted % (SE)^†	1999 to 2004	2005 to 2010	2011 to 2016	P Value^‡
Donated last 12 months
No	37,778	94.1 (0.2)
Yes	1,674	5.9 (0.2)	6.2 (5.6–6.8)	6.2 (5.4–6.9)	5.5 (5.9–6.2)	0.29
Sex
Male	19,268	48.6 (0.2)	6.4 (5.6–7.2)	6.7 (5.8–7.6)	6.0 (5.1–6.8)	0.50
Female	20,184	51.4 (0.2)	5.9 (5.1–6.8)	5.7 (4.9–6.5)	5.1 (4.3–6.0)	0.39
Age
20 to 29 years	6,954	19.0 (0.4)	5.9 (4.6–7.2)	6.5 (5.2–7.9)	8.4 (7.1–9.7)	0.02
30 to 39 years	6,629	18.7 (0.3)	7.0 (5.5–8.5)	6.0 (4.8–7.2)	4.2 (3.3–5.2)	0.0057
40 to 49 years	6,658	20.3 (0.3)	7.8 (6.3–9.3)	7.1 (5.6–8.7)	5.6 (3.9–7.3)	0.14
50 to 59 years	5,815	18.0 (0.3)	6.9 (5.6–8.3)	7.7 (5.9–9.5)	7.0 (5.3–8.6)	0.76
60 years	13,396	24.0 (0.4)	3.3 (2.5–4.1)	4.9 (3.0–4.9)	3.4 (2.5–4.2)	0.58
Race/ethnicity
Non-Hispanic white	18,672	70.6 (1.1)	7.0 (6.3–7.8)	7.2 (6.3–8.2)	6.5 (5.6–7.4)	0.46
Non-Hispanic black	7,982	10.7 (0.6)	3.8 (2.8–4.8)	3.1 (2.4–3.8)	3.8 (2.9–4.7)	0.40
Mex-American or Hispanic	9,863	12.7 (0.8)	3.4 (2.1–4.7)	3.3 (2.6–4.1)	3.3 (2.5–4.1)	0.99
Other	2,935	6.0 (0.3)	5.8 (2.7–9.0)	4.6 (2.5–6.6)	3.8 (2.5–5.0)	0.44
Household income
≤130%	12,100	21.1 (0.6)	2.6 (1.8–3.4)	2.9 (2.2–3.6)	2.9 (2.2–3.7)	0.79
130% to ≤ 185%	5,356	10.9 (0.3)	3.5 (2.3–4.7)	3.2 (2.2–4.3)	4.0 (2.5–5.5)	0.70
>185%	21,996	68.0 (0.8)	7.7 (6.8–8.6)	7.5 (6.7–8.4)	6.7 (5.7–7.6)	0.25
Education
High school or less	19,685	40.6 (0.8)	3.5 (2.8–4.2)	3.6 (2.8–4.3)	2.8 (2.1–3.6)	0.31
College/AA	11,165	31.3 (0.4)	6.5 (5.5–7.5)	6.9 (5.6–8.3)	6.5 (5.4–7.6)	0.84
College graduate	8,602	28.1 (0.8)	10.7 (8.8–12.6)	9.4 (8.0–10.9)	7.5 (6.2–8.8)	0.0165

SE, standard error; AA, associate of arts.
↵* The sample sizes were unweighted, but the percentages were generated as weighted estimates.
↵† Unweighted N and weighted % represent the breakdown of the entire study population. Subsequent columns represent the percentage of people who donated blood during the indicated time period.
↵‡ Wald χ² tests were used to determine changes in the prevalence of recent blood donations for each subgroup. The values in bold are significant.