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Table 4 Univariate and multivariable regression analysis for overall complications

From: A novel technique of harmonic tissue dissection reduces seroma formation after modified radical mastectomy compared to conventional electrocautery: a single-blind randomized controlled trial

Covariate

Univariate CRR (95 % CI)

Multivariate ARR (95 % CI)

- Intervention

 Electrocautery

1

1

 Harmonic

0.48 (0.25 – 0.88)

0.43 (0.23 – 0.84)

- Neoadjuvant therapy

 No

1

1

 Yes

0.77 (0.46 – 1.51)

0.71 (0.41 – 1.46)

- BMI

 Normal

1

1

 Overweight

0.89 (0.47 – 1.95)

0.87 (0.45 – 1.92)

 Obese

1.15 (0.52 – 2.56)

1.07 (0.49 – 2.41)

  1. CRR crude relative risk, CI confidence interval, ARR adjusted relative risk
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Patient Safety in Surgery

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