Also, without access to eligibility periods,
we could only compute total costs paid by Medicaid,
assuming that each subject had full eligibility from 2004 to
2008. Children who were periodically ineligible for Medicaid
coverage were not included in the study.
We included in our
study sample children with adenotonsillar/adenoid hypertrophy.
Adenotonsillar/adenoid hypertrophy are commonly
associated with SDB, but not all children with adenotonsillar/
adenoid hypertrophy will have SDB. By including children
with adenotonsillar/adenoid hypertrophy, we may
have overestimated the study population and introduced selection
bias into our study findings, especially if the health
care costs associated with adenotonsillar/adenoid hypertrophy
with or without SDB differ before or after T&A.