Table 1.
Demographic characteristics of infants participated in immune phenotyping study.
| Clinical variable | Mild disease (n = 28) | Severe disease (n = 47) | P value* |
|---|---|---|---|
| Gestational age, wk; mean ± SE | 39.07 ± 0.28 | 38.63 ± 0.20 | 0.22 |
| Birth weight, kg; mean ± SE | 3.42 ± 0.14 | 3.36 ± 0.09 | 0.71 |
| Gender, male; no. (%) | 14 (50) | 21 (45) | 0.81 |
| Race; no. (%) | |||
| Caucasian only | 17 (61) | 30 (64) | |
| African American only | 7 (25) | 9 (19) | 0.83 |
| Other | 4 (14) | 8 (17) | |
| Age, mo.; mean ± SE | 2.70 ± 0.56 | 2.68 ± 0.31 | 0.97 |
| Days of illness; mean ± SE | |||
| Exposure to tobacco smoke; no. (%) | 4 (14) | 18 (38) | 0.04 |
| RSV group A, B; no. each group | 15, 12 | 30, 16 | 0.46 |
*
P-values calculated by t-test for all except for male, race, smoking and RSV strain fisher’s exact test was used.