Table 5. Preoperative Cardiorespiratory Sleep Study Parameters and Postoperative Outcome

Results from the preoperative Cardiorespiratory Sleep Study for children in the nonINT and INT groups. (*P < 0.05, one way analysis of variance, different from nonINT group.) Children requiring medical intervention (Group INT) have been grouped into 2 subgroups: those requiring minor interventions (INT^minor) and those requiring major interventions (INT^major). See text for a definition of minor and major interventions.

T^{< 90%}= time spent with a saturation < 90%; SaO²= oxygen saturation; OAH = obstructive apnea and hypopnea; INT = intervention.