Table 4.

Summary of retrospective studies, comparing DOACs vs warfarin in obese patients

Study/YearNInclusion criteriaAnticoagulantsEfficacy outcome: thrombotic eventsSafety outcome: major bleeding events
Kido et al/201941  128 AF, BMI > 40 kg/m2 or weight > 120 kg DOAC (D,R,A) (n = 64) 1.75%/y RR, 0.81; 95% CI, 0.20-3.27; P = .77* 2.18%/y RR, 0.37; 95% CI, 0.12-1.15; P = .09* 
Warfarin (n = 64) 2.07%/y 4.97%/y 
Kushnir et al/201942  429 AF, BMI > 40 kg/m2 DOAC (R,A) (n = 277) 1.8% P = 1.00 2.9% OR, 0.43; 95% CI, 0.16-1.13; P = .087* 
Warfarin (n = 152) 1.3% 7.9% 
Kushnir et al/201942  366 VTE, BMI > 40 kg/m2 DOAC (R,A) (n = 199) 2.0% P = .69 1.5% P = .60 
Warfarin (n = 167) 1.2% 2.4% 
Kalani et al/201943  180 VTE and AF, BMI ≥ 40 kg/m2 and/or weight ≥ 120 kg DOAC (D,R,A) (n = 90) 12.2% OR, 1.11; 95% CI, 0.45-2.78; P = .82 2.2% OR, 0.66; 95% CI, 0.11-4.04; P = .65 
Warfarin (n = 90) 11.1% 3.3% 
Perales et al/201944  176 VTE and AF, BMI > 40 kg/m2 or weight > 120 kg DOAC (R) (n = 84) 2.4% P = .68 8.3% P = .06 
Warfarin (n = 92) 4.3% 2.2% 
Study/YearNInclusion criteriaAnticoagulantsEfficacy outcome: thrombotic eventsSafety outcome: major bleeding events
Kido et al/201941  128 AF, BMI > 40 kg/m2 or weight > 120 kg DOAC (D,R,A) (n = 64) 1.75%/y RR, 0.81; 95% CI, 0.20-3.27; P = .77* 2.18%/y RR, 0.37; 95% CI, 0.12-1.15; P = .09* 
Warfarin (n = 64) 2.07%/y 4.97%/y 
Kushnir et al/201942  429 AF, BMI > 40 kg/m2 DOAC (R,A) (n = 277) 1.8% P = 1.00 2.9% OR, 0.43; 95% CI, 0.16-1.13; P = .087* 
Warfarin (n = 152) 1.3% 7.9% 
Kushnir et al/201942  366 VTE, BMI > 40 kg/m2 DOAC (R,A) (n = 199) 2.0% P = .69 1.5% P = .60 
Warfarin (n = 167) 1.2% 2.4% 
Kalani et al/201943  180 VTE and AF, BMI ≥ 40 kg/m2 and/or weight ≥ 120 kg DOAC (D,R,A) (n = 90) 12.2% OR, 1.11; 95% CI, 0.45-2.78; P = .82 2.2% OR, 0.66; 95% CI, 0.11-4.04; P = .65 
Warfarin (n = 90) 11.1% 3.3% 
Perales et al/201944  176 VTE and AF, BMI > 40 kg/m2 or weight > 120 kg DOAC (R) (n = 84) 2.4% P = .68 8.3% P = .06 
Warfarin (n = 92) 4.3% 2.2% 

RR, rate ratio. See Tables 1 and 3 for expansion of other abbreviations.

*

The values are after controlling for confounders.

P value was obtained from time to major bleeding analysis.

The safety outcomes include major bleeding and clinically relevant nonmajor bleeding, 1-year follow-up in this study.

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