Table 1.

Baseline Characteristics of Subsequent Questionnaire Respondents and Non-Respondents

	Respondents (n = 67)	Non-respondents (n = 41)	p value
Gender, M/F	58/9	36/5	0.85
Age, yr	59.6 ± 12.1	53.8 ± 18.1	0.05
BMI, kg/m2	28.7 ± 4.2	29.3 ± 8.5	0.45
Overall AHI, events/h	29.6 ± 13.6	36.8 ± 45.6	0.41
Supine AHI, events/h	53.0 ± 20.3*	55.2 ± 24.6*	0.64
Lateral AHI, events/h	14.1 ± 9.9	13.9 ± 13.6	0.91

Data expressed as number or mean ± SD. BMI refers to body mass index; AHI, apnea-hypopnea index.

^*p < 0.05 compared to lateral AHI.