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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