Table 3 Associations between SARS-CoV-2 test positivity and demographics, characteristics of exposure, and behaviors in the 14 days prior to in-school exposure to a COVID-19 case among K–12 students in a school district in Georgia, December 2020–January 2021 (N=560)
Elementary School Students | Middle/High School Students | |||||||
|---|---|---|---|---|---|---|---|---|
(+) Contacts N=32 | (-) Contacts N=322 | OR (95% CI) | P value^ | (+) Contacts N=22 | (-) Contacts N=184 | OR (95% CI) | P value^ | |
Demographics | ||||||||
Gender | ||||||||
Male | 17 (9.6%) | 161 (90.4%) | 1.1 (0.5-2.3) | 0.7 | 15 (11.9%) | 111 (88.1%) | 1.4 (0.5-3.6) | 0.5 |
Female | 15 (8.5%) | 161 (91.5%) | Ref | 7 (8.8%) | 73 (91.2%) | Ref | ||
Race and ethnicity | ||||||||
Non-Hispanic White | 6 (11.8%) | 45 (88.2%) | Ref | 3 (4.7%) | 61 (95.3%) | Ref | ||
Non-Hispanic Black | 7 (7.9%) | 82 (92.1%) | 0.6 (0.2-2.0) | 0.4 | 12 (18.2%) | 54 (81.8%) | 4.5 (1.2-16.9) | 0.03 |
Hispanic or Latino/a | 17 (8.4%) | 186 (91.6%) | 0.7 (0.3-1.8) | 0.5 | 7 (10.0%) | 63 (90.0%) | 2.3 (0.6-9.1) | 0.3 |
Other race/ethnicitya | 2 (18.2%) | 9 (81.8%) | 1.7 (0.3-9.6) | 0.6 | 0 (0.0%) | 6 (100.0%) | - | 1.0 |
Characterstics Of Exposure | ||||||||
Index case role in school | ||||||||
Staff | 24 (14.0%) | 148 (86.0%) | 3.5 (1.5-8.1) | 0.002 | 3 (8.8%) | 31 (91.2%) | 0.8 (0.2-2.8) | 1.0 |
Student | 8 (4.4%) | 174 (95.6%) | Ref | 19 (11.1%) | 153 (88.9%) | Ref | ||
Reported primary exposure locationb | ||||||||
Classroom/educational settingc | 28 (9.8%) | 258 (90.2%) | Ref | 8 (6.3%) | 120 (93.7%) | Ref | ||
Bus | 4 (6.0%) | 63 (94.0%) | 0.6 (0.2-1.7) | 0.5 | 1 (4.0%) | 24 (96.0%) | 0.6 (0.1-5.2) | 1.0 |
Sports | 0 (0.0%) | 1 (100.0%) | - | 1.0 | 13 (26.5%) | 36 (73.5%) | 5.4 (2.1-14.1) | 0.0002 |
Concurrent exposure in school | ||||||||
Concurrently exposed to ≥1 case in school | 2 (10.5%) | 17 (89.5%) | 1.2 (0.3-5.4) | 0.7 | 1 (25.0%) | 3 (75.0%) | 2.9 (0.3-28.9) | 0.4 |
Exposed to 1 case in school | 30 (9.0%) | 305 (91.0%) | Ref | 21 (10.4%) | 181 (89.6%) | Ref | ||
In-School Behaviors | ||||||||
Transportation to/from school | ||||||||
Ever took bus | 19 (8.2%) | 214 (91.8%) | 0.7 (0.4-1.5) | 0.4 | 12 (10.8%) | 99 (89.2%) | 1.0 (0.4-2.5) | 0.9 |
Never took bus | 13 (10.7%) | 108 (89.3%) | Ref | 10 (10.5%) | 85 (89.5%) | Ref | ||
Participation in sports at school | ||||||||
Any sports participation | 5 (35.7%) | 9 (64.3%) | 6.4 (2.0-20.5) | 0.0004 | 15 (17.7%) | 70 (82.3%) | 3.5 (1.4-9.0) | 0.007 |
No sports participation | 27 (8.0%) | 312 (92.0%) | Ref | 7 (5.8%) | 114 (94.2%) | Ref | ||
Participation in non-sports extracurriculars | ||||||||
Any non-sports extracurricular activitiesd | 3 (11.5%) | 23 (88.5%) | 1.3 (0.4-4.7) | 0.7 | 1 (5.9%) | 16 (94.1%) | 0.5 (0.1-4.0) | 1.0 |
No non-sports extracurricular activities | 29 (8.9%) | 298 (91.1%) | Ref | 21 (11.1%) | 168 (88.9%) | Ref | ||
Mask use in school | ||||||||
Any unmasked time in school | 20 (10.3%) | 175 (89.7%) | 1.4 (0.7-2.9) | 0.4 | 10 (10.6%) | 84 (89.4%) | 1.1 (0.4-2.7) | 0.9 |
No unmasked time in school | 12 (7.6%) | 146 (92.4%) | Ref | 10 (9.9%) | 91 (90.1%) | Ref | ||
Any unmasked time in school indoors | 10 (11.8%) | 75 (88.2%) | 1.5 (0.7-3.3) | 0.3 | 8 (11.9%) | 59 (88.1%) | 1.3 (0.5-3.4) | 0.6 |
No unmasked time in school indoors | 22 (8.2%) | 246 (91.8%) | Ref | 12 (9.4%) | 116 (90.6%) | Ref | ||
Any unmasked time in school outdoors | 17 (10.5%) | 145 (89.5%) | 1.5 (0.7-3.3) | 0.3 | 3 (5.8%) | 49 (94.2%) | 0.4 (0.1-1.6) | 0.3 |
No unmasked time in school outdoors | 10 (7.4%) | 126 (92.6%) | Ref | 8 (12.9%) | 54 (87.1%) | Ref | ||
Mask use in school sports | ||||||||
Any unmasked time in school sports | 4 (44.4%) | 5 (55.6%) | 9.0 (2.3-35.5) | 0.005 | 15 (20.3%) | 59 (79.7%) | 4.3 (1.7-11.3) | 0.001 |
No unmasked time in school sportse | 28 (8.1%) | 316 (91.9%) | Ref | 7 (5.5%) | 120 (94.5%) | Ref | ||