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Table 4 Non-endometrioid endometrial carcinoma, FIGO stage I-III. Uni- and multivariable Cox proportional hazard regression analyzing overall survival including type of surgery, subtype, FIGO stage, and age

From: Survival in endometrial cancer in relation to minimally invasive surgery or open surgery – a Swedish Gynecologic Cancer Group (SweGCG) study

Variables

No. of patients

Univariable

Cox regression

Multivariable

Cox regression

HR (95% CI)

p

HR (95% CI)

p

Surgical approach

 MIS

316

Ref.

 

Ref.

 

 Open surgery

573

1.10 (0.86–1.42)

0.44

0.98 (0.76–1.27)

0.88

Morphologya

 Clear cell

175

0.73 (0.52–1.03)

0.076

0.68 (0.48–0.96)

0.030

 Serous

495

Ref.

 

Ref.

 

 Carcinosarcoma

219

1.77 (1.38–2.27)

< 0.001

1.67 (1.29–2.16)

< 0.001

FIGO stage

 IA

372

Ref.

 

Ref.

 

 IB

143

2.26 (1.54–3.32)

< 0.001

1.99 (1.34–2.93)

0.001

 II

117

3.70 (2.57–5.34)

< 0.001

3.47 (2.40–5.03)

< 0.001

 III

257

4.50 (3.30–6.12)

< 0.001

4.68 (3.42–6.40)

< 0.001

Age group (years)

 0–59

74

Ref.

 

Ref.

 

 60–69

256

1.43 (0.79–2.60)

0.24

1.67 (0.92–3.04)

0.093

 70–79

359

2.18 (1.23–3.87)

0.008

2.50 (1.41–4.46)

0.002

 80-

200

4.17 (2.34–7.43)

< 0.001

4.74 (2.65–8.50)

< 0.001

  1. aThe proportional hazard rates assumption is not fulfilled