Table 4.

Body mass index and age, apnea-hypopnea index, oxygen desaturation index, and obstructive sleep apnea

	BMI ≥ 25 kg/m2 (n = 27)	BMI < 25 kg/m2 (n = 17)	P Value*	All (N = 44)
Age, yr	66.3 ± 8.2	70.1 ±  8.4	0.15	67.8 ± 8.4
AHI, events/h	22.8 ± 22.1	11.0 ± 16.8	0.07	18.3 ± 20.8
ODI, events/h	15.3 ± 20.3	6.0 ± 13.1	0.10	11.7 ± 18.3
OSA†, %	77.8	47.1	0.04	65.9

Definition of abbreviations: AHI = apnea–hypopnea index; BMI = body mass index; ODI = oxygen desaturation index; OSA = obstructive sleep apnea.

Data are presented as mean ± SD.

^*Chi-square test.

^†Prevalence using AHI.