TABLE 1.
Characteristics of Study Participants in Relation to Acute LRIs in the First Year of Life
| Variable | Total (N = 297), n (%)a | Acute LRI (N = 87), n (%) | No Acute LRI (N = 206), n (%) |
|---|---|---|---|
| Gender | |||
| Male | 162 (54.5) | 52 (59.8) | 108 (52.4) |
| Female | 135 (45.5) | 35 (40.2) | 98 (47.6) |
| Race | |||
| White | 224 (75.4) | 72 (82.8) | 152 (73.8) |
| Black | 28 (9.4) | 3 (3.4) | 23 (11.2)b |
| Hispanic | 17 (5.7) | 4 (4.6) | 13 (6.3) |
| Other | 28 (9.4) | 8 (9.2) | 18 (8.7) |
| Reports of wheeze in the first year of life | 84 (28.6) | 50 (57.5) | 31 (15.0)c |
| Physician-diagnosed eczema in the first year of life | 63 (21.4) | 16 (18.4) | 45 (21.8) |
| Maternal history | |||
| Eczema | 53 (17.9) | 15 (17.2) | 36 (17.5) |
| Asthma | 42 (14.1) | 11 (12.6) | 29 (14.1) |
| Hay fever | 95 (32.0) | 31 (35.6) | 63 (30.6) |
| Paternal history | |||
| Eczema | 33 (11.1) | 11 (12.6) | 22 (10.7) |
| Asthma | 43 (14.5) | 12 (13.8) | 31 (15.0) |
| Hay fever | 104 (35.0) | 33 (37.9) | 71 (34.5) |
| Maternal smoking during pregnancy | 16 (5.4) | 5 (5.7) | 11 (5.3) |
| Ever breastfed in the first year of life | 256 (86.2) | 77 (88.5) | 175 (85.0) |
| Daycare attendance in the first year of life | 146 (49.2) | 48 (55.2) | 95 (46.1) |
| Having >1 sibling <12 y of age in the household | 150 (50.5) | 54 (62.1) | 94 (45.6)c |
| Household income, $ | |||
| ≤40 000 | 28 (9.4) | 6 (6.9) | 22 (10.7) |
| >40 000 | 248 (83.5) | 76 (87.4) | 170 (82.5) |
| Unknown | 21 (7.1) | 5 (5.7) | 14 (6.8) |
| Neonatal gestational age, wkd | 39.6 (1.7) | 39.2 (2.2) | 39.8 (1.36)b |
| Neonatal birth weight, kgd | 3.53 (0.5) | 3.47 (0.57) | 3.56 (0.51) |
| Maternal age, yd | 32.5 (4.7) | 32.9 (4.6) | 32.3 (4.8) |
a
Among the 297 study participants with follow-up at age 1 year, 293 have information on lower respiratory.
b
Associated with lowered acute LRI in the first year of life, P < .05.
c
Associated with increased acute LRI in the first year of life, P < .05.
d
Value are mean (SD).