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Table 3 Univariate analysis of the association between BPs and survival outcome

From: Association of perioperative blood pressure with long-term survival in rectal cancer patients

Variable

Blood pressure

No. of patients in low BP group/high BP group

DFS

CSS

Categorized, HR (95% CI)

Continuous HR (95% CI)

P

Categorized, HR (95% CI)

Continuous HR (95% CI)

P

<Cut-off (ref)

≥Cut-off

P

<Cut-off (ref)

≥Cut-off

P

Total

Preoperative BP

358

          

SBP

111/247

1.00

1.87 (1.11–3.17)

0.019

1.01 (0.99–1.01)

0.229

1.00

4.18 (1.48–11.83)

0.007

1.00 (0.99–1.01)

0.726

DBP

207/151

1.00

1.44 (0.93–2.23)

0.107

1.01 (0.99–1.03)

0.221

1.00

1.72 (0.89–3.31)

0.106

1.00 (0.98–1.02)

0.971

Mid-BP

161/197

1.00

1.54 (0.98–2.42)

0.060

1.01 (0.99–1.03)

0.121

1.00

1.73 (0.87–3.42)

0.117

1.02 (0.99–1.04)

0.145

Postoperative BP

358

          

SBP

258/100

1.00

1.26 (0.79–1.98)

0.330

1.00 (0.99–1.02)

0.807

1.00

1.99 (1.05–3.78)

0.035

1.01 (0.99–1.03)

0.207

DBP

337/21

1.00

1.33 (0.61–2.88)

0.477

1.01 (0.98–1.03)

0.625

1.00

2.15 (0.84–5.53)

0.111

1.03 (0.99–1.06)

0.106

Mid-BP

306/52

1.00

1.63 (0.96–2.74)

0.069

1.00 (0.99–1.02)

0.716

1.00

2.34 (1.16–4.72)

0.018

1.02 (0.99–1.05)

0.131

Sex

 Men

Preoperative SBP

62/135

1.00

1.89 (0.90–3.97)

0.091

1.00 (0.99–1.01)

0.701

1.00

3.37 (1.00–11.39)

0.050

1.00 (0.99–1.01)

0.777

Postoperative SBP

145/59

1.00

1.35 (0.73–2.50)

0.334

1.00 (0.98–1.02)

0.957

1.00

1.76 (0.79–3.93)

0.170

1.01 (0.98–1.03)

0.450

 Women

Preoperative SBP

45/108

1.00

1.79 (0.85–3.78)

0.128

1.01 (0.99–1.02)

0.230

1.00

6.16 (0.81–47.19)

0.080

1.02 (0.99–1.04)

0.191

Postoperative SBP

113/41

1.00

1.25 (0.62–2.52)

0.531

1.01 (0.99–1.03)

0.509

1.00

2.32 (0.80–6.69)

0.120

1.02 (0.98–1.05)

0.380

History of hypertension

 Yes

Preoperative SBP

5/61

1.00

1.13 (0.37–3.49)

0.350

1.00 (0.99–1.02)

0.665

1.00

0.85 (0.17–4.41)

0.848

1.00 (0.98–1.02)

0.959

Postoperative SBP

25/41

1.00

0.56 (0.20–1.56)

0.269

0.99 (0.96–1.03)

0.746

1.00

0.40 (0.09–1.79)

0.229

0.97 (0.92–1.02)

0.180

 No

Preoperative SBP

102/183

1.00

1.66 (0.96–2.85)

0.070

1.00 (0.99–1.01)

0.412

1.00

3.84 (1.34–11.05)

0.012

1.00 (0.99–1.02)

0.804

Postoperative SBP

233/59

1.00

1.36 (0.80–2.31)

0.255

0.99 (0.98–1.02)

0.945

1.00

2.77 (1.36–5.66)

0.005

1.02 (1.00–1.05)

0.053

BMI

 BMI <23

Preoperative SBP

70/125

1.00

1.42 (0.75–2.69)

0.283

1.00 (0.99–1.02)

0.820

1.00

2.40 (0.79–7.24)

0.120

0.99 (0.98–1.01)

0.352

Postoperative SBP

152/47

1.00

1.79 (0.96–3.33)

0.066

1.01 (0.99–1.03)

0.246

1.00

2.69 (1.13–6.38)

0.025

1.02 (0.99–1.04)

0.129

 BMI ≥23

Preoperative SBP

29/104

1.00

1.99 (0.69–5.70)

0.201

1.00 (0.99–1.01)

0.709

1.00

1.08 (0.23–5.00)

0.247

1.01 (0.99–1.02)

0.636

Postoperative SBP

95/40

1.00

0.70 (0.31–1.58)

0.394

0.98 (0.95–1.01)

0.112

1.00

1.01 (0.30–3.36)

0.987

0.99 (0.95–1.03)

0.561

  1. DBP diastolic blood pressure, DFS disease-free survival, CSS cancer-specific survival, HR hazard ratio, CI confidence interval, SBP systolic blood pressure, BMI body mass index, BP blood pressure, AJCC American Joint Committee on Cancer, CEA carcinoembryonic antigen