... SOURCE: CDC/NCHS, National Health Interview Survey, 2010. Summary Health Statistics f or U.S. Children: National Health Interview Surve y, 2010 Series 10, Number 250 December 2011 Series ... current estimates with those published in the 1997–2001 Summary Health Statistics reports and may see the effects of age adjustment on the 2010 estimates (see Appendix I for details on age adjustment). ... In 2010, the NHIS sample was expanded by approximately 25% during January–March. There were no further expansions or reductions in the remaining months of that year, resulting in a 2010...