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Table 3 Association of clinical variables and ABO haplotypes with VT recurrence in MARTHA (prospective and ambispective) and MEGA

From: Association of ABO blood groups with venous thrombosis recurrence in middle-aged patients: insights from a weighted Cox analysis dedicated to ambispective design

Variables

MARTHA Prospective

MARTHA Ambispective

MEGA

Meta-analysis

MARTHA Ambispective

& MEGA

N = 839

Nb recurrences = 159

N = 1,504

Nb recurrences = 565

N = 1,248

Nb recurrences = 428

HR (95% CI)

P

HR (95% CI)

P

HR (95% CI)

P

HR (95% CI)

P

Gender

 Men

1.47 (1.03–2.09)

0.034

1.65 (1.36–2.01)

4.0 × 10–7

1.81 (1.46–2.25)

5.9 × 10–8

1.72 (1.47–2.01)

3.0 × 10–12

Age at the first VT

(10 years increase)

0.91 (0.81–1.02)

0.105

1.08 (1.02–1.15)

0.020

0.99 (0.92–1.07)

0.810

1.05 (0.99–1.11)

0.107

Type of the first VT

 DVT

0.85 (0.60–1.21)

0.368

1.17 (0.96–1.42)

0.140

1.15 (0.95–1.40)

0.160

1.16 (1.01–1.33)

0.036

Characteristic of the first VT

 Provoked

0.69 (0.48–1.00)

0.059

0.99 (0.80–1.23)

0.920

0.61 (0.49–0.76)

6.7 × 10–6

0.78 (0.67–0.91)

1.2 × 10–3

ABO haplotypes

 A1

1.32 (1.02–1.70)

0.035

1.15 (1.00–1.32)

0.045

1.21 (1.03–1.42)

0.018

1.18 (1.05–1.33)

4.2 × 10–3

 A2

1.13 (0.68–1.88)

0.644

1.27 (0.98–1.64)

0.061

1.11 (0.86–1.43)

0.409

1.19 (1.00–1.42)

0.062

 O1

Reference

Reference

Reference

Reference

 O2

1.05 (0.47–2.35)

0.896

1.19 (0.73–1.94)

0.476

0.86 (0.50–1.49)

0.584

1.03 (0.70–1.52)

0.880

 B

1.00 (0.64–1.57)

0.998

1.02 (0.82–1.27)

0.874

1.00 (0.78–1.29)

0.987

1.01 (0.85–1.21)

0.900

  1. HR Hazard Ratio, CI Confidence Interval