Table 1.
Characteristics of the study population
| Demographic characteristic | Healthy n = 60 N (%) | RSV ARI n = 70 N (%) | HRV ARI n = 10 N (%) | Total n = 140 N (%) |
|---|---|---|---|---|
| Sex | ||||
| Female | 36 (60.7) | 44 (62.3) | 8 (80.0) | 88 (62.9) |
| Male | 24 (39.3) | 26 (37.7) | 2 (20.0) | 52 (37.1) |
| Race and ethnicity | ||||
| White | 38 (63.9) | 48 (68.1) | 10 (100.0) | 96 (68.6) |
| Black | 9 (14.7) | 9 (13.0) | 18 (12.9) | |
| Hispanic | 8 (13.1) | 8 (11.6) | 16 (11.4) | |
| Other/multiple | 5 (8.2) | 5 (7.3) | 10 (7.1) | |
| Recurrent wheezing (ages 0–1) | 18 (29.5) | 34 (49.3) | 4 (40.0) | 56 (40.0) |
| Recurrent wheezing (ages 1–2) | 13 (21.3) | 34 (49.3) | 5 (50.0) | 52 (37.1) |
| Recurrent wheezing (ages 2–3) | 10 (16.4) | 32 (46.4) | 3 (30.0) | 45 (32.1) |
| Exclusively formula fed at enrollment | 23 (37.7) | 28 (40.6) | 6 (60.0) | 57 (40.7) |
| Maternal smoking at enrollment | ||||
| Current | 12 (20.3) | 16 (26.2) | 1 (10.0) | 29 (23.3) |
| Former | 8 (13.6) | 7 (11.5) | 15 (12.5) | |
| Never | 39 (66.1) | 38 (62.3) | 9 (90.0) | 86 (64.2) |
| Maternal education level | ||||
| College | 32 (54.1) | 41 (60.9) | 7 (70.0) | 82 (58.5) |
| High school | 23 (37.7) | 21 (30.4) | 3 (30.0) | 47 (33.6) |
| < High school | 5 (8.2) | 6 (8.7) | 11 (7.9) | |
| Mean (SD) | Mean (SD) | Mean (SD) | ||
| Gestational age, weeks | 38.9 (1.2) | 38.9 (0.9) | 39.0 (1.1) | 38.9 (1.1) |
| Acute respiratory illness severity scorea | 4.4 (2.6) | 2.4 (1.1) | ||
RSV respiratory syncytial virus, HRV human rhinovirus
a
Respiratory severity score on scale to 0–12 with higher scores indicating more severe disease