Table 6.

Factors associated with nocturnal BP change: Univariate analysis

Difference in Nocturnal BP Change (%)P Value
Dichotomous variables
 Men (versus women)0.220.70
 Overweight (BMI ≥25)−0.250.69
 Obesity (BMI ≥30)0.330.80
 Antihypertensive medicine use−1.880.04
 Diuretic use−1.750.004
 Diabetes−2.56<0.001
 Proteinuria−1.880.03
 Nocturia−3.99<0.001
 Much difficulty in sleep−1.820.007
 Winter (versus summer)2.55<0.001
 CKD stage 4 (versus stage 3)−1.440.01
 CKD stage 5 (versus stage 3)−1.180.15
Continuous variables
 Age (10 yr)−0.530.03
 BMI (1 kg/m2)0.040.56
 eGFR (10 ml/min per 1.73 m2)0.590.008
  • Simple linear regression analysis was used for univariate evaluations to detect the factors associated with nocturnal BP change. BMI, body mass index; eGFR, estimated GFR.