Implications of Weight and Body Mass Index for Plasma Donation and Health

Table 2

Bivariate analysis of physiological parameters and BMI, stratified by <25 and ≥25 BMI.

	Overall; 𝑁 = 315	<25 BMI; 𝑁 = 145	≥25 BMI; 𝑁 = 170	P value
	Mean = 35.1	Mean = 30.2	Mean = 39.3
Age (years)	Median = 32.0	Median = 26.0	Median = 39.5	<0.0001
	Std Dev = 11.9	Std Dev = 9.6	Std Dev = 12.2
	Mean = 36.5	Mean = 36.5	Mean = 36.6
Oral temp. (°C)	Median = 36.6	Median = 36.6	Median = 36.6	0.811
	Std Dev = 0.58	Std Dev = 0.6	Std Dev = 0.5
	Mean = 126.9	Mean = 121.9	Mean = 131.2
BP systolic (mm Hg)	Median = 127.0	Median = 121.0	Median = 132.0	<0.0001
	Std Dev = 16.1	Std Dev = 15.1	Std Dev = 15.7
	Mean = 73.8	Mean = 72.2	Mean = 75.1
BP diastolic (mm Hg)	Median = 74.0	Median = 72.0	Median = 76.0	0.043
	Std Dev = 9.9	Std Dev = 9.5	Std Dev = 10.2
	Mean = 91.5	Mean = 88.8	Mean = 93.8
Mean arterial pressure (mm Hg)	Median = 91.3	Median = 88.3	Median = 93.5	<0.0001
	Std Dev = 10.6	Std Dev = 10.1	Std Dev = 10.5
	Mean = 71.5	Mean = 70.5	Mean = 72.4
Pulse (beats per minute)	Median = 71.0	Median = 70.0	Median = 73.0	0.0013
	Std Dev = 11.4	Std Dev = 11.5	Std Dev = 11.2
Race
African American	59	16 (27%)	43 (73%)
Asian	46	32 (70%)	14 (30%)	0.0002
White	200	91 (46%)	109 (54%)
*Other	10	6 (60%)	4 (40%)
Sex
Male	107	50 (47%)	57 (53%)	0.859
Female	208	95 (46%)	113 (54%)

*The racial category “other” represents all choice races not included among African American, Asian, or White categories.