Table 3

Effect of CPAP treatments on BP levels in the intention-to-treat population

BP, mm HgFP-CPAP (n=161)AutoCPAP (n=161)Intergroup rawIntergroup adjusted*
BaselineFollow-upp ValueBaselineFollow-upp ValueDifferences (95% CI)p ValueDifferences (95% CI)p Value
Office SBP135.8±16.8133.6±15.90.23134.8±17.6134.3±17.70.82−1.7 (−4.9 to 1.4)0.28−1.3 (−4.1 to 1.5)0.37
Office DBP79.6±9.876.8±10.40.01480.2±9.778.2±9.50.06−0.8 (−2.9 to 1.3)0.44−1.1 (−2.9 to 0.7)0.25
24 h SBP129.3±14.0127.2±14.00.17128.4±13.7128.1±14.20.84−1.8 (−4.4 to 0.8)0.17−1.5 (−3.8 to 0.8)0.21
24 h DBP78.6±8.876.8±9.00.0878.6±8.378.1±8.00.59−1.3 (−2.7 to 0.2)0.08−1.4 (−2.7 to −0.01)0.048
24 h mean BP95.3±9.293.6±9.50.1094.9±8.994.5±9.10.72−1.4 (−3.2 to 0.4)0.13−1.2 (−2.9 to 0.4)0.13
Daytime SBP134.4±14.8132.4±14.60.22133.2±14.0132.9±14.40.87−1.8 (−4.5 to 1.0)0.21−1.3 (−3.8 to 1.2)0.30
Daytime DBP82.4±9.780.4±9.80.0682.5±8.781.8±8.90.47−1.3 (−3.1 to 0.4)0.13−1.4 (−3.0 to 0.2)0.09
Daytime mean BP99.3±10.097.4±10.20.0898.8±8.998.4±9.20.69−1.6 (−3.5 to 0.3)0.11−1.5 (−3.2 to 0.2)0.09
Nighttime SBP119.9±14.7118.2±15.50.31119.6±15.8119.0±15.70.72−1.1 (−3.9 to 1.8)0.46−1.0 (−3.6 to 1.6)0.45
Nighttime DBP71.4±8.970.3±9.10.2671.3±971.5±8.90.85−1.3 (−3.0 to 0.4)0.13−1.3 (−2.8 to 0.3)0.10
Nighttime mean BP87.9±9.686.9±10.10.3887.8±10.387.6±10.00.85−0.8 (−2.8 to 1.2)0.45−0.7 (−2.5 to 1.1)0.42
  • Data are presented as mean±SD.

  • Statistical significances p<0.05 in bold.

  • *Adjusted by baseline BP values.

  • AutoCPAP, auto-adjusted CPAP; BP, blood pressure; DBP, diastolic blood pressure; FP-CPAP, fixed-pressure CPAP; SBP, systolic blood pressure.