Table 1 Demographic characteristics and clinical data of patients with SSTI caused by S. aureus

Age (median [range])

4 [0;84]

24 [0;76]

3 [0;84]

1.03 [1.05;1.02]

 < 0.001

Age group

 Children

334 (72%)

13 (3.9%)

321 (96.1%)

Ref

Ref

 Adults

130 (28.0%)

21 (16.2%)

109 (83.8%)

4.72 [2.30;10.0]

 < 0.001

Sex

 Male

257 (53.9%)

20 (7.8%)

237 (92.2%)

Ref

Ref

 Female

220 (46.1%)

15 (6.8%)

205 (93.2%)

0.87 [0.42;1.74]

0.82

Clinical sample

 Superficial

473 (95.2%)

28 (5.9%)

445 (94.1%)

Ref

Ref

 Deep-seated

24 (4.8%)

8 (33.3%)

16 (66.7%)

7.94 [2.96;19.9]

 < 0.001

Ward

 Out-patient department

267 (53.7%)

14 (5.2%)

253 (94.8%)

Ref

Ref

 Other

23 (4.6%)

3 (13.0%)

20 (87.0%)

2.79 [0.58;9.62]

0.18

 Pediatric

120 (24.1%)

3 (2.5%)

117 (97.5%)

0.48 [0.10;1.53]

0.23

 Surgery

87 (17.5%)

16 (18.4%)

71 (81.6%)

4.05 [1.87;8.85]

 < 0.001

Empiric antimicrobial therapy

 No

299 (60.2%)

20 (6.7%)

279 (93.3%)

Ref

Ref

 Yes

200 (39.8%)

16 (8.1%)

182 (92.0%)

1.21 [0.60;2.39]

0.72

Number of previously prescribed antibiotics

 None

299 (60.2%)

20 (6.7%)

279 (93.3%)

Ref

Ref

 1

156 (31.4%)

10 (6.4%)

146 (93.6%)

0.96 [0.42;2.08]

0.93

 2

33 (6.6%)

4 (12.1%)

29 (87.9%)

1.97 [0.53;5.71]

0.28

  > 2

9 (1.8%)

2 (22.2%)

7 (77.8%)

4.15 [0.53;19.2]

0.15