* Geographic regions were defined according to categories used by the
U.S. Census.
† Seasons were defined as: spring, Mar.
20th-Jun. 19th; summer, Jun.
20th-Sept. 21st; fall, Sept.
22nd-Dec. 20th; winter, Dec.
21st-Mar. 19th.
Table 2. Association between prenatal acid suppressant
medication exposure and allergic sensitization in early childhood