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To assess the efficacy and safety of non-vitamin K antagonist oral anticoagulant rivaroxaban in patients with non-valvular atrial fibrillation Cover

To assess the efficacy and safety of non-vitamin K antagonist oral anticoagulant rivaroxaban in patients with non-valvular atrial fibrillation

By: Lijun Qin,  Yanhong Mou and  Yan Guo  
Open Access
|Oct 2025

Figures & Tables

Figure 1.

Kaplan-Meier curves showing (A) time to first stroke and (B) time to major bleeding events in the study population
Kaplan-Meier curves showing (A) time to first stroke and (B) time to major bleeding events in the study population

Figure 2.

Kaplan-Meier survival curves comparing the rivaroxaban and warfarin groups for stroke risk, time to first stroke, and major bleeding events. A: Stroke risk; B: Time to first stroke; C: Major bleeding events
Kaplan-Meier survival curves comparing the rivaroxaban and warfarin groups for stroke risk, time to first stroke, and major bleeding events. A: Stroke risk; B: Time to first stroke; C: Major bleeding events

Laboratory Parameters at Baseline and Follow-up (n = 140)

ParameterBaseline (Mean ± SD)3 Months (Mean ± SD)6 Months (Mean ± SD)9 Months (Mean ± SD)12 Months (Mean ± SD)p-value
Hemoglobin (g/dL)13.90 ± 1.6013.85 ± 1.5513.80 ± 1.5213.75 ± 1.5013.70 ± 1.480.048
Platelet Count (10 /L)210.0 ± 45.0208.5 ± 44.0207.0 ± 43.5205.5 ± 42.8204.0 ± 42.00.032
Serum Creatinine (mg/dL)1.10 ± 0.301.12 ± 0.321.15 ± 0.341.17 ± 0.361.20 ± 0.400.005
Creatinine Clearance (mL/min)70.20 ± 15.4069.10 ± 15.2568.00 ± 15.1066.80 ± 14.8565.50 ± 14.500.003
ALT (U/L)25.40 ± 8.5025.60 ± 8.5525.80 ± 8.6026.00 ± 8.7026.10 ± 8.800.092
AST (U/L)26.80 ± 7.9027.00 ± 7.9527.10 ± 8.0027.20 ± 8.1027.30 ± 8.200.081
Prothrombin Time (seconds)13.10 ± 1.4013.15 ± 1.4213.20 ± 1.4513.25 ± 1.4813.30 ± 1.500.045
INR1.00 ± 0.101.02 ± 0.121.03 ± 0.131.04 ± 0.141.05 ± 0.150.040
eGFR (mL/min/1.73m2)82.50 ± 12.4081.00 ± 12.1079.50 ± 11.8078.20 ± 11.5077.00 ± 11.200.004
Total Bilirubin (mg/dL)0.85 ± 0.200.88 ± 0.220.90 ± 0.230.92 ± 0.240.95 ± 0.250.027
LDH (U/L)160.0 ± 40.0162.5 ± 41.0165.0 ± 41.5167.0 ± 42.0170.0 ± 43.00.014

Adverse Event Profile During Follow-Up

Adverse Event3 Months6 Months9 Months12 MonthsTotal Events (n, %)p-value
Major Bleeding22228 (5.71%)0.018
- Intracranial Bleeding01102 (1.43%)0.041
- Gastrointestinal Bleeding11114 (2.86%)0.027
- Other Critical Organ Bleeding10012 (1.43%)0.056
Clinically Relevant Non-Major Bleeding343212 (8.57%)0.022
Minor Bleeding545418 (12.86%)0.015
Worsening Renal Function12227 (5.00%)0.033
Liver Function Abnormalities11215 (3.57%)0.047
Discontinuation Due to Adverse Events343414 (10.00%)0.011

Treatment Outcomes

OutcomeNumber (n)Percentage (%)p-value
Primary Efficacy Outcomes
Stroke (Ischemic/Hemorrhagic)53.570.014
Systemic Embolism10.710.045
Primary Safety Outcomes
Major Bleeding (ISTH Criteria)85.710.021
- Intracranial Bleeding21.430.038
- Gastrointestinal Bleeding42.860.027
- Other Critical Organ Bleeding21.430.052
Secondary Efficacy Outcomes
Transient Ischemic Attack (TIA)42.860.032
Cardiovascular Hospitalization1510.71<0.001
Cardiovascular Mortality64.290.016
All-Cause Mortality96.430.012
Recurrent Atrial Fibrillation Episodes1812.860.008
Secondary Safety Outcomes
Clinically Relevant Non-Major Bleeding128.570.019
Minor Bleeding1812.860.015
Hemoglobin Drop ≥ 2 g/dL53.570.043
Transfusion Requirement32.140.047
Renal and Hepatic Safety Outcomes
Worsening Renal Function (≥ 20% decline CrCl)75.000.039
ALT Increase > 3x Upper Limit21.430.051
AST Increase > 3x Upper Limit32.140.047
Treatment Discontinuation
Discontinuation Due to Adverse Events1410.00<0.001
- Due to Bleeding53.570.031
- Due to Worsening Renal Function42.860.044
- Other Reasons53.570.058

Multiple Regression Analysis for Predictors of Stroke and Major Bleeding

VariableBeta CoefficientStandard Errorp-value95% CI
Age (years)0.0320.0120.0090.008 to 0.056
CHA DS -VASc Score0.1250.0420.0020.042 to 0.208
HAS-BLED Score0.1120.0380.0040.037 to 0.187
Systolic BP (mm Hg)0.0160.0070.0230.002 to 0.030
Renal Function (CrCl, mL/min)−0.0580.0210.007−0.099 to −0.017
Hemoglobin (g/dL)−0.0540.0250.034−0.103 to −0.005
Prior Stroke/TIA0.2650.0800.0010.106 to 0.424
Body Mass Index (kg/m2)−0.0450.0180.013−0.080 to −0.010
Heart Rate (beats/min)0.0210.0080.0150.005 to 0.037
ALT (U/L)0.0370.0140.0100.009 to 0.065
AST (U/L)0.0420.0150.0060.013 to 0.071
Diabetes Mellitus0.1840.0720.0120.043 to 0.325
Hypertension0.1530.0610.0160.032 to 0.274
Smoking0.1210.0480.0140.027 to 0.215
Alcohol Consumption0.1080.0460.0220.016 to 0.200
Heart Failure0.1670.0700.0180.030 to 0.304
Liver Disease0.0990.0480.0400.004 to 0.194

Baseline Characteristics of the Study Population (n = 140)

ParameterNumber (n)Percentage (%)p-value
Age (years)-68.52 ± 10.23-
Sex
Male8560.71Reference
Female5539.29-
BMI (kg/m2)-27.42 ± 4.31-
Lifestyle Factors
Smoking4532.140.045
Alcohol Consumption3827.140.052
Comorbidities
Hypertension9567.86<0.001
Diabetes Mellitus5237.140.038
Coronary Artery Disease4230.000.041
Prior Stroke/TIA2820.000.023
Peripheral Arterial Disease1510.710.067
Heart Failure3827.140.030
Chronic Kidney Disease2316.430.058
Liver Disease128.570.084
Duration of AF (months)-18.25 ± 9.74-
Risk Scores
CHA DS -VASc Score-3.20 ± 1.14<0.001
HAS-BLED Score-2.10 ± 0.92-
Vital Signs
Systolic Blood Pressure (mmHg)-135.62 ± 14.25-
Diastolic Blood Pressure (mmHg)-82.32 ± 9.85-
Heart Rate (beats/min)-78.45 ± 10.53-
Baseline ECG Findings
Normal Sinus Rhythm2215.71Reference
Atrial Fibrillation11884.29<0.001
Language: English
Page range: 145 - 158
Submitted on: Feb 27, 2025
Accepted on: Jul 22, 2025
Published on: Oct 21, 2025
Published by: Hirszfeld Institute of Immunology and Experimental Therapy
In partnership with: Paradigm Publishing Services
Publication frequency: 1 issue per year

© 2025 Lijun Qin, Yanhong Mou, Yan Guo, published by Hirszfeld Institute of Immunology and Experimental Therapy
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.