A Clinical Prediction Formula for Apnea-Hypopnea Index

Table 1

Characteristics of the study population.

Variables	Study population ()
Age (year)*	50.1 ± 11.1
Sex (, %)	Male: 289 (73.9%)
	Female: 101 (26.1%)
Current Smoker (, %)	116 (29.7)
Alcohol Consumption (, %)	67 (17.2%)
Comorbidities (, %)
Hypertension	156 (40 %)
Diabetes mellitus	76 (19.5 %)
Coronary artery disease	31 (7.9 %)
BMI (kg/m^2)*	30.8 ± 5.5
Neck Circumference (cm)*	40.9 ± 4.2
Waist Circumference (cm)*	106.1 ± 14.6
Hip Circumference (cm)*	110.1 ± 11.2
Epworth Sleepiness Score*	9.8 ± 6.0
Apnea-hypopnea index (/hour)*	33.2 ± 30.3

BMI: Body mass index, NC: Neck circumference, WC: Waist circumference, HC: Hip circumference, SpO₂: Oxygen saturation, FVC: Forced vital capacity, FEV1%: Forced expiratory volume ratio in one second, ESS: Epworth Sleepiness Scale’s score, TS: Tonsil size. *Values are expressed as mean (SD).