... were IL13 polymorphisms and birth order . Outcome variablesinclude skin prick tests at ages 4, 10, and 18, total IgE at birth (cord serum) and at age 10, and inhalant IgE screen at age 10. The ... atopy,maternal IgE, maternal atopic status and gender weresignificantly associated with SPT at ages 10 and 18, butnot at age 4 years (Table 4). Only elevated cord serum IgE was significantly associated ... IgE and inhalant IgE screen at age 10, and with skin prick test positivity at ages 4, 10 and 18 yearsUnivariable analysisUnivariable analysis showed no significant associationbetween birth order...