Table 2 Multivariate Cox regression analysis of the impact of hypertension and frailty on death risk in older adults according to the different agegroups

HR(95%CI)

P-value

HR(95%CI)

P-value

HR(95%CI)

P-value

HR(95%CI)

P-value

Age

1.048(1.042–1.055)

< 0.001

1.077(1.049–1.106)

< 0.001

1.046(1.025–1.068)

< 0.001

0.994(0.953–1.037)

0.784

Gender

0.721(0.662–0.786)

< 0.001

0.623(0.526–0.739)

< 0.001

0.735(0.646–0.836)

< 0.001

0.850(0.720–1.003)

0.054

Education level^a

 Junior high school

0.977(0.901–1.046)

0.397

0.923(0.833–1.057)

0.294

0.965(0.849–1.114)

0.326

0.933(0.877–1.366)

0.233

 Senior high school or above

0.864(0.812–1.019)

0.183

0.811(0.732–1.016)

0.109

0.852(0.766–1.021)

0.079

0.847(0.807–1.173)

0.128

 Marital status

1.371(1.219–1.543)

< 0.001

1.369(1.150–1.630)

< 0.001

1.269(1.059-–1.521)

0.010

1.632(1.107–2.405)

0.013

Hypertension and frailty status^b

 Hypertension and no frailty

1.406(1.237–1.597)

0.005

1.331(1.159–2.354)

0.021

1.594(1.113–1.744)

0.018

1.174(0.774–1.781)

0.450

 No hypertension but frailty

1.484(1.259–1.933)

< 0.001

1.345(1.052–1.721)

0.018

1.511(1.254–1.820)

< 0.001

1.223(0.948–1.578)

0.122

 Hypertension and frailty

1.792(1.642–1.957)

< 0.001

2.122(1.777–2.533)

< 0.001

1.821(1.604–2.067)

< 0.001

1.573(1.338–1.850)

< 0.001