Research Article

Sex Differences in the Prevalence and Modulators of Sleep-Disordered Breathing in Outpatients with Type 2 Diabetes

Table 3

Linear regression analysis: factors associated with AHI in the total population, in 267 women and in 412 men.

VariableUnivariable analysisMultivariable analysis
B (95% CI) valueB (95% CI) value

Total population ()
Female sex−4.75 (−6.74, −2.76)<0.001−3.54 (−6.06, −1.02)0.006
Age [per 10 years]1.70 (0.59, 2.81)0.0032.55 (1.40, 3.70)<0.001
BMI [per 5 units]2.99 (2.10, 3.88)<0.0013.48 (2.53, 4.44)<0.001
Waist-hip ratio [per 0.1 unit]4.48 (3.25, 5.71)<0.0012.35 (0.77, 3.94)0.004
Systolic BP0.08 (0.03, 0.13)0.0040.02 (−0.04, 0.07)0.508
T2D duration0.09 (−0.04, 0.21)0.165−0.004 (−0.13, 0.12)0.952
Women ()
Age [per 10 years]1.92 (0.49, 3.35)0.0092.35 (0.83, 3.87)0.003
BMI [per 5 units]2.00 (0.87, 3.13)0.0012.05 (0.88, 3.21)0.001
Waist-hip ratio [per 0.1 units]3.24 (1.13, 5.35)0.0032.29 (0.18, 4.40)0.034
Systolic BP0.08 (0.01, 0.16)0.0370.03 (−0.05, 0.11)0.446
T2D duration0.06 (−0.13, 0.25)0.527−0.02 (−0.02, 0.17)0.826
Men ()
Age [per 10 years]1.41 (−0.19, 3.01)0.0842.76 (1.09, 4.43)0.001
BMI [per 5 units]4.75 (3.45, 6.06)<0.0015.25 (3.73, 6.77)<0.001
Waist-hip ratio [per 0.1 units]4.92 (2.71, 7.12)<0.0011.59 (−0.77, 3.94)0.185
Systolic BP0.06 (−0.01, 0.14)0.0910.01 (−0.06, 0.09)0.739
T2D duration0.07 (−0.09, 0.23)0.3930.01 (−0.15, 0.17)0.882

AHI = apnoea-hypopnoea index; B = unstandardized regression coefficient; 95% CI = 95% confidence interval; BMI = body mass index; T2D duration = duration of type 2 diabetes; BP = blood pressure.