Table 1.
Demographic Distribution of Participants Included Compared With Those Excluded for the Analyses of the Wheeze Outcomesa
| Predictor variables | Included (n = 279) | Excluded (n = 448) | P valueb |
|---|---|---|---|
| Mother’s age at pregnancy, mean ± SDc | 24.99 ± 4.91 | 25.40 ± 4.92 | .15 |
| Prenatal demoralization, mean ± SDc | 1.15 ± 0.64 | 1.15 ± 0.63 | .83 |
| Ethnicityd | |||
| Dominican | 166 (59) | 307 (68) | .02 |
| African American | 113 (41) | 141 (32) | |
| Maternal educatione | |||
| Less than high school | 94 (34) | 192 (43) | <.01f |
| High school diploma | 90 (32) | 139 (32) | .18f |
| Some college | 95 (34) | 113 (25) | |
| Positive maternal history of asthmad | 84 (30) | 140 (31) | .80 |
| Maternal IgE >100 IU IgE/mLd | 81 (29) | 54 (31) | .75 |
| Child exposed to secondhand smoked | 105 (38) | 140 (31) | .09 |
| Child’s sex: maled | 131 (47) | 133 (46) | .59 |
| Wheeze phenotypes at the age of 5 yearse | |||
| Transient | 76 (27) | 71 (34) | .47f |
| Late onset | 21 (8) | 9 (4) | .14f |
| Persistent | 67 (24) | 38 (18) | .16f |
| Nonwheeze | 115 (41) | 92 (44) |
a
Data are presented as number (percentage) of participants unless otherwise specified.
b
P values refer to the difference between the participants selected for the analyses and those not selected. Similar findings were observed between included vs excluded for the analyses of total and specific IgE outcomes.
c
P value assessed by Mann-Whitney test.
d
P value assessed via a Pearson χ2 test.
e
P value assessed via a nominal regression.
f
Reference group was having completed some college and no wheeze, respectively.