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TABLE 1

Demographic and Baseline Characteristics (Full Analysis Set)

CharacteristicUS-Licensed QIV (n = 805)QIVc (n = 1597)Total (n = 2402)
Mean age ± SD, months 28.2 ± 11.63 28.1 ± 11.54 28.1 ± 11.57 
Age group, n (%)    
 6–23 mo 299 (37.1) 595 (37.3) 894 (37.2) 
 24–47 mo 506 (62.9) 1002 (62.7) 1508 (62.8) 
Female, n (%) 399 (49.6) 794 (49.7) 1193 (49.7) 
Race and ethnicity, n (%)    
 White 539 (67.0) 1039 (65.1) 1578 (65.7) 
 Black 209 (26.0) 455 (28.5) 664 (27.6) 
 Asian 8 (1.0) 13 (0.8) 21 (0.9) 
 Native Hawaiian or Other Pacific Islander 6 (0.7) 8 (0.5) 14 (0.6) 
 American Indian or Alaska Native 11 (1.4) 11 (0.7) 22 (0.9) 
 Other 32 (4.0) 71 (4.4) 103 (4.3) 
 Hispanic ethnicity 226 (28.1) 434 (27.2) 660 (27.5) 
Previously vaccinated, n (%) 430 (53.4) 810 (50.7) 1240 (51.6) 
Mean BMI ± SD, kg/m2 17.15 ± 3.0 16.99 ± 2.47 17.05 ± 2.66 
CharacteristicUS-Licensed QIV (n = 805)QIVc (n = 1597)Total (n = 2402)
Mean age ± SD, months 28.2 ± 11.63 28.1 ± 11.54 28.1 ± 11.57 
Age group, n (%)    
 6–23 mo 299 (37.1) 595 (37.3) 894 (37.2) 
 24–47 mo 506 (62.9) 1002 (62.7) 1508 (62.8) 
Female, n (%) 399 (49.6) 794 (49.7) 1193 (49.7) 
Race and ethnicity, n (%)    
 White 539 (67.0) 1039 (65.1) 1578 (65.7) 
 Black 209 (26.0) 455 (28.5) 664 (27.6) 
 Asian 8 (1.0) 13 (0.8) 21 (0.9) 
 Native Hawaiian or Other Pacific Islander 6 (0.7) 8 (0.5) 14 (0.6) 
 American Indian or Alaska Native 11 (1.4) 11 (0.7) 22 (0.9) 
 Other 32 (4.0) 71 (4.4) 103 (4.3) 
 Hispanic ethnicity 226 (28.1) 434 (27.2) 660 (27.5) 
Previously vaccinated, n (%) 430 (53.4) 810 (50.7) 1240 (51.6) 
Mean BMI ± SD, kg/m2 17.15 ± 3.0 16.99 ± 2.47 17.05 ± 2.66 

QIVc, cell-based quadrivalent inactivated influenza vaccine; US-licensed QIV, US-licensed quadrivalent inactivated influenza vaccine.

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