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Table 1 The characteristics of patients in seroma and no seroma groups and univariate odds ratio.

From: Seroma formation after surgery for breast cancer

 

Seroma group (n = 55) n. (%)

No seroma group (n = 103) n. (%)

OR (95% CI)*

p value**

Age (years)

   

0.22

<40

12 (21.8)

34 (33.0)

1.00 (ref.)

 

40–49

20 (36.4)

38 (36.9)

1.49 (0.63–3.49)

 

>50

23 (41.8)

31 (30.1)

2.10 (0.89–4.92)

 

Tumor size (cm)

   

0.64

<2

21 (38.2)

47 (45.6)

1.00 (ref.)

 

2–5

21 (38.2)

34 (33.0)

1.42 (0.67–3.01)

 

>5

13 (23.6)

22 (21.3)

1.26 (0.53–2.96)

 

Nodal involvement (n = 152)

   

0.31

No

14 (26.4)

34 (36.8)

1.00 (ref.)

 

Yes

39 (73.6)

65 (65.7)

1.45 (0.69–3.04)

 

Surgical procedure

   

0.03

Breast conservation

10 (18.2)

33 (32.0)

1.00 (ref.)

 

Modified radical mastectomy

45 (81.8)

70 (68.0)

2.12 (0.95–4.72)

 

Surgical instrument

   

0.06

Scalpel

8 (14.5)

23 (22.3)

1.00 (ref.)

 

Cautery

47 (85.5)

80 (77.7)

1.68 (0.70–4.07)

 

Neoadjuvant chemotherapy

   

0.22

No

46 (83.6)

93 (90.3)

1.00 (ref.)

 

Yes

9 (16.4)

10 (9.7)

1.82 (0.69–4.78)

 

Pressure garment

   

0.63

Yes

12 (21.8)

26 (25.2)

1.00 (ref.)

 

No

43 (78.2)

77 (74.8)

1.21 (0.55–2.63)

 

Axillary drainage time (days/n= 152)

   

0.64

>10

8 (15.1)

20 (20.2)

1.00 (ref.)

 

5–10

30 (56.6)

49 (49.5)

1.53 (0.59–3.90)

 

<5

15 (28.3)

30 (30.3)

1.25 (0.44–3.49)

 
  1. * Odds ratios derived from univariate logistic regression analysis.
  2. ** P values derived from the Chi-squared test.