Comparison of % of abnormal polysomnography parameters and pulmonary function test between morbidly obese children and adults

Variable (% of subjects with abnormalities)Children (%) n = 74Adults (%) n = 70p (chi 2 test)
Demographic data
Mean age (range)13.7 (7.2-17.6)44.9 (18.2-76.1)
Boys (%)34 (46)21 (30)0.049
Mean BMI (range)37 (22.6-58.4)45.7 (40-65.2)
Mean Weight (range)95.3 (37-157)126.6 (95-190)
Polysomnography
Epworth score ≤1114330.056
Presence of snoring32886.10-8
Abnormal Sleep efficiency (<90%)59600.949
Presence of OSAS92850.196
Average SpO2 (<95%)19721.10-8
PaCO2 (>45 mmHg)17290.134
Pulmonary Function Tests (z-score < - 1.64)
Slow Vital Capacity (VC)1480.245
Functional Residual Capacity52240.001
Residual Volume (RV)2250.003
Total Lung Capacity (TLC)1430.027
RV/TLC3120.046
FEV17303.10-4
Forced VC10210.046