Table 1 Risk factors associated with abscess formation of leg erysipelas, univariate analysis

Age

    <25 years

76 (13.5)

10 (13.2)

66 (86.8)

1

-

0.43

    25-35 years

134 (23.9)

11 (8.2)

123 (91.8)

0.59

[0.24 – 1.46]

    >35 years

352 (62.6)

42 (11.9)

310 (88.1)

0.89

[0.43 – 1.86]

Gender

   Male

223 (39.7)

31 (13.9)

192 (86.1)

1.55

[0.92 – 2.62]

0.10

   Female

339 (60.3)

32 (9.4)

307 (90.4)

1

Obesity

    Yes

230 (40.9)

23(10.0)

200 (90.0)

0.81

[0.47 – 1.40]

0.45

    No

332 (59.1)

40(12.0)

292 (88.0)

1

Chronic alcohol intake

    Yes

18 (3.2)

2 (11.1)

16 (88.9)

0.99

[0.22 – 4.41]

0.67

    No

544 (96.8)

61 (11.2)

483 (88.8)

1

Diabetes

    Yes

27 (4.8)

2 (7.4)

25 (92.6)

0.62

[0.14 – 2.69]

0.76

    No

535 (95.2)

61 (11.4)

474 (88.6)

1

Hypertension

    Yes

81 (14.4)

10 (12.3)

71 (87.7)

1.14

[0.55 – 2.34]

0.73

    No

481 (85.6)

53 (11.0)

428 (89.0)

1

Sedentary

    Yes

85 (15.1)

12 (14.1)

73 (85.9)

1.37

[0.70 – 2.70]

0.36

    No

477 (84.9)

51 (10.7)

426 (89.3)

1

Nicotine addiction

    Yes

29 (5.2)

7 (24.1)

22 (75.9)

2.71

[1.11 – 6.63]

0.03

    No

533 (84.8)

56 (10.5)

477 (89.5)

1

HIV infection

    Yes

16 (2.8)

1 (6.2)

15 (93.8)

0.52

[0.07 – 4.01]

0.44

    No

546 (97.2)

62 (11.4)

484 (88.6)

1

Pitting oedema

    Yes

130 (23.1)

20 (15.4)

110 (84.6)

1.65

[0.93 – 2.91]

0.08

    No

432 (76.9)

43 (10.0)

389 (90.0)

1

Varicous vein

    Yes

19 (3.4)

2 (10.5)

17 (89.5)

0.93

[0.21 – 4.21]

0.64

    No

543 (96.6)

61 (11.2)

482 (88.8)

1

Obstructive arteriopathy

    Yes

5 (0.9)

1 (20.0)

4 (80.0)

1.99

[0.22 – 18.14]

0.45

    No

557 (99.1)

62 (11.1)

495 (88.9)

1

Use of bleaching agents

    Yes

97 (17.3)

5 (5.2)

92 (94.8)

0.38

[0.15 – 0.98]

0.04

    No

465 (82.3)

58 (12.5)

407 (87.5)

1

Previous history of phlebitis

    Yes

2 (0.4)

0 (0.0)

2 (100.0)

-

-

0.79

    No

560 (99.6)

63 (11.2)

497 (88.8)

Previous history of surgery of the leg

    Yes

6 (1.1))

2 (33.3)

4 (66.7)

4.06

[0.73 – 22.62]

0.14

    No

556 (98.9)

61 (11.0)

495 (89.0)

1

Neurologic disorders

    Yes

1 (0.2))

0 (0.0)

1 (100.0)

-

-

0.88

    No

561 (99.8)

63 (11.2)

498 (88.8)

Intertrigo of intertoe

    Yes

161 (28.6)

12 (7.5)

149 (92.5)

0.55

[0.29 – 1.07]

0.07

    No

401 (71.4)

51 (12.7)

350 (87.3)

1

Neglected wound on the leg

    Yes

324 (57.7)

43 (13.3)

281 (86.7)

1.67

[0.95 – 2.92]

0.07

    No

238 (42.3)

20 (8.4)

218 (91.6)

1

Delayed of antibiotics treatment at onset of erysipelas

    <3 days

104 (18.5)

8 (7.7)

96 (92.3)

1

-

<0.001

    3-10 days

295 (52.5)

23 (7.8)

272 (92.2)

1.01

[0.44 – 2.33]

    >10 days

93 (16.5)

28 (30.1)

65 (69.9)

5.17

[2.22 – 12.05]

Use of non steroidanti inflammatory drugs

    Yes

207 (36.5)

35 (16.9)

172 (83.1)

2.38

[1.40 – 4.04]

0.001

    No

355 (63.5)

28 (7.9)

327 (92.1)

1

Use of cataplasms and decoctions before consultation

    Yes

104 (18.5)

21 (20.2)

83 (79.8)

2.51

[1.41 – 4.45]

0.001

    No

458 (81.5)

42 (9.2)

416 (90.8)

1