Table 2. Variables Associated With Presence Of Nocturia.^† .

Variable	B (S.E.)	P value	95% CI
AHI†	0.008 (0.001)	<0.0001	0.005, 0.01
AHI >15*	0.18 (0.04)	<0.0001	0.12, 0.27
AHI >10*	0.17 (0.04)	<0.0001	0.10, 0.24
AHI >5*	0.14 (0.03)	<0.0001	0.07, 0.20
Age	0.015 (0.001)	<0.0001	0.013, 0.018
Body mass index	0.009 (0.003)	0.002	0.003, 0.014
Alcohol	0.005 (0.002)	0.046	0, 0.01
Diuretics*	0.14 (0.04)	0.001	0.05, 0.22
Diabetes Mellitus*	0.11 (0.05)	0.034	0.008, 0.20
α-blocker*	0.51 (0.07)	<0.001	0.37, 0.65
FEV1	−0.20 (0.01)	0.003	−0.03, −0.01
Coffee	−0.03	<0.0001	−0.04, −0.02
Soda	−0.06	<0.0001	−0.09, −0.03
Tea	0.01	0.4	−0.013, 0.04
Multiple regressions §
AHI†	0.004 (0.001)	0.001	0.002, 0.007
AHI >15*	0.12 (0.04)	0.007	0.03, 0.21
AHI >10*	0.07 (0.04)	0.06	−0.01, 0.15
AHI >5*	0.07 (0.04)	0.04	0.0, 0.14

AHI = respiratory disturbance index; BMI = body mass index; FEV₁ = forced expiratory volume in one second; CI = confidence interval;

*dichotomous variables;

^†continuous variable.

^§Multiple regression that adjusts for age, BMI, alcohol, diuretics, FEV₁, α-blocker, coffee and soda.