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. Author manuscript; available in PMC: 2023 Sep 28.
Published in final edited form as: JAMA Netw Open. 2023 Apr 3;6(4):e239135. doi: 10.1001/jamanetworkopen.2023.9135

Table 1.

Demographic and Baseline Characteristics (Safety Analysis Set Population)

Characteristic Participant groupa
NVX-CoV2373 (n = 1487) Placebo (n = 745) All (N = 2232)
Age, y
 Mean (SD) 13.9 (1.4) 13.8 (1.4) 13.8 (1.4)
 Median (range) 14 (12–17) 14 (12–17) 14 (12–17)
Age group, y
 12–14 998 (67.1) 500 (67.1) 1498 (67.1)
 15–17 489 (32.9) 245 (32.9) 734 (32.9)
Sex
 Male 756 (50.8) 416 (55.8) 1172 (52.5)
 Female 731 (49.2) 329 (44.2) 1060 (47.5)
Race
 African American or Black 202 (13.6) 108 (14.5) 310 (13.9)
 American Indian or Alaska Native 32 (2.2) 14 (1.9) 46 (2.1)
 Asian 43 (2.9) 34 (4.6) 77 (3.4)
 Native Hawaiian or other Pacific Islander 3 (0.2) 2 (0.3) 5 (0.2)
 White 1115 (75.0) 545 (73.2) 1660 (74.4)
 Multiracial 82 (5.5) 37 (5.0) 119 (5.3)
 Not reported 10 (0.7) 5 (0.7) 15 (0.7)
Ethnicity
 Hispanic or Latino 274 (18.4) 138 (18.5) 412 (18.5)
 Not Hispanic or Latino 1208 (81.2) 607 (81.5) 1815 (81.3)
 Not reported 2 (0.1) 0 2 (0.1)
 Unknown 3 (0.2) 0 3 (0.1)
BMI categoryb
 Underweight (<18.0) 40 (2.7) 28 (3.8) 68 (3.0)
 Normal (18.0–24.9) 771 (51.8) 417 (56.0) 1188 (53.2)
 Overweight (25.0–29.9) 270 (18.2) 107 (14.4)
 Obesity (≥30.0) 406 (27.3) 193 (25.9) 599 (26.8)
Previous SARS-CoV-2 infection statusc
 Positive 234 (15.7) 125 (16.8) 359 (16.1)
 Negative 1252 (84.2) 620 (83.2) 1872 (83.9)
 Missing 1 (0.1) 0 1 (0.04)

Abbreviation: BMI, body mass index (calculated as weight in kilograms divided by height in meters squared).

a

Unless otherwise indicated, data are expressed as No. (%) of patients. Percentages have been rounded and may not total 100. Percentages are based on the safety analysis set within each treatment and overall.

b

Classified (using sex- and age-specific percentiles) as underweight, less than the 5th percentile; healthy, within the 5th percentile and up to the 85th percentile; overweight, within the 85th percentile to less than the 95th percentile; and obesity, equal to or greater than the 95th percentile.

c

Indicates either antinucleoprotein or reverse transcriptase–polymerase chain reaction positive findings at baseline.