TABLE 1.

Subject characteristics

	Control (n = 12)	α-trait (n = 15)	P
Age, y	28.7 [±13.4]	40.3 [±16.3]	.060*
Sex			.795†
Male	5 [42%]	7 [47%]
Female	7 [58%]	8 [53%]
Race/ethnicity			.014‡
Asian	1 [8%]	9 [60%]
Black	11 [92%]	5 [33%]
White		1 [7%]
Vitals
Height, cm	167 [±9.8]	172 [±8.3]	.206§
Weight, kg	71.3 [±20]	78.2 [±19]	.366§
BMI, kg/m2	25.6 [±7.5]	26.4 [±5.4]	.783§
SBP, mm Hg	118 [±13]	128 [±11]	.195§∥
DBP, mm Hg	73 [±11]	80 [±9]	.205§∥
HR, bpm	76.2 [±14]	75.4 [±8.6]	.859§
RR, bpm	15.1 [±2.7]	13.9 [±2.0]	.287*
O2 saturation, %	98 [±1.2]	98 [±0.8]	.203*
Laboratory values
Hemoglobin, g/dL	13.1 [±1.4]	12.7 [±1.4]	.511§
MCV, fL	85 [±7.3]	76.6 [±8.4]	.010§
Absolute reticulocyte, K/μL	62.6 [±24.7]	67.6 [±18.9]	.510*
LDH, U/L	478 [±106]	570 [±91]	.027§¶
Plasma hemoglobin, mg/dL	9.8 [±9.1]	7.9 [±6.3]	.401§

Note: Values expressed as mean [±SD] for continuous variables, and as n [%] for categorical variables. The P value was determined by

^*Wilcoxon rank sum test,

^†Pearsonʼs χ² test,

^‡Fisherʼs exact test or

^§Student t test. Bold P values indicate significant differences (P < .05).

^∥Corrected for age.

^¶Both values are in the normal range.

Abbreviations: BMI, body mass index; DBP, diastolic blood pressure; HR, heart rate; LDH, lactate dehydrogenase; MCV, mean corpuscular volume; RR, respiratory rate; SBP, systolic blood pressure.