Table 4: Risk factors for mortality in patients with necrotizing fasciitis.

Factors

Patients

number/percentage

Died/percentage

P-value

Age ≥ 40 yr

341 (71.6%)

19 (55.9%)

0.178

Acidosis (pH < 7.35)

312 (65.5%)

26 (76.5%)

0.002

Leukocytosis (> 12 × 109/L)

326 (68.5%)

23 (67.6%)

0.039

Truncal location

9 (1.9%)

8 (23.5%)

0.036

Hypoalbuminemia (< 30g/L)

268 (56.3%)

23 (67.6)

0.004

Anemia (< 10mg/dL)

137 (28.8%)

7 (20.6%)

0.152

Thrombocytopenia (< 100 x 109/L)

37 (7.8%)

2 (0.6%)

0.149

Hypotension

53 (11.1%)

3 (8.8%)

0.496

Diabetes mellitus

128 (26.9)

6 (17.6%)

0.953

Azotemia (blood urea nitrogen > 5.4 mmol/ L)

226 (47.5%)

16 (47.1%)

0.093