| http://www.w3.org/ns/prov#value | - Twenty percent of all subjects had end tidal carbon dioxide values of >45 mm Hg, and 2.2% had recorded values >50 mm Hg during > or =50% TST. High variance was present on all measures.CONCLUSIONS: Developmental changes occur in several polysomnographic measures among normal children from 3 to 7 years of age, particularly during transition from preschool to early school age.
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