Outcomes and exposures in children with complete data (N = 4,706).

* Frequency distribution weighted by each child’s posterior probability of class membership.** “Age 3 years or later, not before” = owned at or after age 33 months but not at any time before; “Before and after age 3 years” = owned at any time before age 33 months and at any time thereafter; “Before but not after 3 years” = owned at any time before, but not owned at or at any time after, age 33 months.Outcomes and exposures in children with complete data (N = 4,706).