Variable | Baseline | 6 months after signing the contract | P value |

Mean blood pressure, mm Hg, mean±SD | |||

Systolic pressure, mm Hg, mean±SD | |||

Observation group (n=403) | 143.7±11.4 | 131.6±12.0 | <0.001* |

Control group (n=565) | 142.1±22.1 | 132.7±18.8 | <0.001* |

P value | 0.123† | 0.023† | |

Diastolic pressure, mm Hg, mean±SD | |||

Observation group (n=403) | 81.5±7.2 | 74.9±7.6 | <0.001* |

Control group (n=565) | 80.6±9.4 | 74.8±7.0 | <0.001* |

P value | 0.138† | 0.735† | |

Rate of blood pressure control, n (%) | |||

Observation group (n=403) | 103 (25.6) | 308 (76.4) | <0.001‡ |

Control group (n=565) | 129 (22.8) | 256 (45.3) | <0.001‡ |

P value | 0.327§ | <0.001§ |

*Data comparison between baseline and 6 months after signing the contract: paired t-test.

†Comparison of data between observation group and control group: two independent sample t-test.

‡Comparison between baseline and 6 months after signing the contract: McNemar’s test.

§Comparison of data between observation group and control group: Pearson’s Χ

^{2}test.