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Table 2 Sleep registration data and glucose metabolism characteristics in 137 extremely obese subjects according to the presence or absence of obstructive sleep apnea (OSA)

From: Type 2 diabetes and pre-diabetes are associated with obstructive sleep apnea in extremely obese subjects: A cross-sectional study

Variables All participants OSA no OSA yes p-value
N 137 53 (39%) 84 (61%)  
Sleep registration     
Apnea-Hypopnea index 16 (20) 2 (2) 25 (22) <0.001
Oxygen desaturation index 17 (18) 3 (3) 26 (21) <0.001
Snoring (5 of sleep time) 19 (21) 11 (14) 23 (23) <0.001
SpO2 (%) 93 (3) 95 (2) 93 (3) <0.001
Glucose metabolism     
Glucose, fasting (mmol/l) 6.6 (2.0) 5.8 (1.1) 7.1 (2.3) <0.001
Glucose, 2 hour (mmol/l) 7.6 (3.2) 6.5 (2.5) 8.3 (3.4) 0.001
HbA1 (%) 5.9 (1.1) 5.5 (0.8) 6.1 (1.2) 0.001
Insulin (pmol/l) 201 (89) 193 (78) 207 (96) 0.468
HOMA Insulin Resistance 3.8 (1.7) 3.6 (1.4) 4.0 (1.8) 0.178
  1. Variables are given as either mean (SD) or proportions (%). Statistical analysis: Fisher's exact test (categorical data) and independent samples t-test (continuous data).