Skip to main content

Table 3 Repeated measures comparisons of serial parameters between CPAP and CT at baseline, 6 months and 12 months

From: A prospective cohort study of the long-term effects of CPAP on carotid artery intima-media thickness in Obstructive sleep apnea syndrome

   CPAP (n = 28)    CT (n = 22)   P-value
  Baseline 6 m 12 m Baseline 6 m 12 m  
Neck circumference (cm) 40.5 (0.7) 40.2 (0.6) 40.2 (0.7) 38.5 (0.8) 38.2 (0.8) 38.5 (0.8) 0.819
Waist circumference (cm) 97.9 (1.9) 98.0 (1.6) 97.9 (1.7) 95.3 (2.8) 93.2 (2.9) 94.7 (2.9) 0.260
Hip circumference (cm) 102.2 (1.4) 104.0 (1.5) 105.2 (1.3) 100.8 (2.3) 102.5 (2.2) 102.7 (2.1) 0.653
Body mass index (kg/m²) 28.2 (0.7) 28.6 (0.7) 28.3 (0.8) 28.0 (1.2) 27.7 (1.1) 27.9 (1.2) 0.042
Systolic BP (mmHg) 140.8 (3.2) 129.0 (3.6) 130.7 (3.6) 138.4 (5.4) 135.9 (5.4) 136.1 (5.2) 0.593
Diastolic BP (mmHg) 81.7 (2.1) 82.3 (2.1) 83.3 (2.1) 78.6 (3.0) 84.9 (2.9) 83.8 (3.7) 0.412
ESS (0-24) 13.4 (0.9) 8.4 (0.8) 8.2 (1.0) 12.7 (1.0) 10.2 (1.2) 10.3 (1.5) 0.110
CPAP usage (hrs/night) N/A 4.6 (0.3) 4.7 (0.4) N/A N/A N/A N/A
Mean carotid IMT (micron) 757.5 (30) 720.9 (20) 704.5 (20) 760.0 (30) 769.8 (30) 777.7 (30) 0.002
  1. Values are expressed as mean (SE)
  2. The p-values of BP trends from baseline to 12 months within the CPAP group are as follows: systolic BP, p = 0.013; diastolic BP, p = 0.573