Table 3 Changes in blood pressure (BP)
VariablesnMeansSDSE meanCI for differencet test p valueRecorded values
MaxMin
Intervention
Systolic BP
    Before27142.1422.914.41196112
    After27122.7815.943.07Paired148100
    Difference27−19.3614.512.79−13.93 to −25.410.000
Diastolic BP
    Before2785.0715.152.9211366
    After2773.2211.992.23Paired9350
    Difference27−11.8513.342.57−6.57 to −17.130.000
Control
Systolic BP
    Before9140.0014.594.86163117
    After9142.7818.516.17Paired169126
    Difference9+2.789.303.10+9.8 to −4.370.396
Diastolic BP
    Before984.678.234.869871
    After992.898.872.96Paired10678
    Difference9+8.227.482.49+13.87 to +2.470.011
Difference between intervention and control
Systolic BP
    Intervention27−19.714.52.8
    Control9+2.789.303.1Two sample
    Estimated difference22.1413.77 to 31.120.000
Diastolic BP
    Intervention27−11.8513.32.6
    Control9+8.227.482.5Two sample
    Estimated difference20.0712.70 to 27.440.000