Research Article

Risk Factors for Predicting Mortality and Amputation of Patients with Necrotizing Soft-Tissue Infections: Retrospective Analysis of 111 Cases from a Single Medical Center

Table 7

Laboratory findings of live and dead patients with NSTI.

VariableGroupSize (missing)Mean ± SDMedian (interquartile)Range (minimum and maximum)χ2Statistics (T or Z)value

CRPLive100 (0)105.98 ± 112.1160.50 (16.00, 174.00)514 (1, 515)Wilcoxon two-sample test2.30.021
Dead11 (0)165.54 ± 91.56145.40 (89.10, 240.00)286.3 (33.7, 320)
Differences (row 1-row 2)−59.5695% CI (−129.06, 9.94)

WBCLive100 (0)10.26 ± 5.248.70 (6.55, 12.80)25.3 (0.3, 25.6)Wilcoxon two-sample test2.1520.031
Dead11 (0)19.24 ± 21.0111.80 (9.00, 18.60)72.9 (7.1, 80)
Range (row 1-row 2)−8.9895% CI (−23.11, 5.16)

HbLive100 (0)96.11 ± 36.07101.00 (87.00, 118.50)156.6 (5.4, 162)Wilcoxon two-sample test−2.6010.009
Dead11 (0)79.09 ± 20.8776.00 (69.00, 86.00)77 (55, 132)
Differences (row 1-row 2)17.0295% CI (1.75, 32.29)

HCT•Live100 (0)315.64 ± 66.56310.00 (279.00, 360.00)327 (152, 479)Wilcoxon two-sample test−3.2270.001
Dead11 (0)243.91 ± 73.21228.00 (188.00, 267.00)263 (165, 428)
Differences (row 1-row 2)71.7395% CI (29.42, 114.04)

SodiumLive100 (0)136.07 ± 10.55137.90 (134.00, 140.50)104.6 (42.8, 147.4)Wilcoxon two-sample test−1.1450.252
Dead11 (0)134.82 ± 6.81134.00 (130.00, 140.80)22 (125, 147)
Differences (row 1-row 2)1.2595% CI (−5.21, 7.71)

BUNLive100 (0)7.92 ± 6.295.99 (4.33, 9.32)32.46 (1.27, 33.73)Wilcoxon two-sample test1.9340.053
Dead11 (0)14.85 ± 13.937.30 (6.30, 24.24)39.69 (2.88, 42.57)
Differences (row 1-row 2)−6.9395% CI (−16.34, 2.47)

CrLive100 (0)95.97 ± 119.5663.00 (48.00, 80.00)732.67 (0.33, 733)Wilcoxon two-sample test1.2090.227
Dead11 (0)96.00 ± 59.4082.00 (59.00, 112.00)175 (34, 209)
Differences (row 1-row 2)−0.0395% CI (−44.88, 44.82)

GlucoseLive100 (0)9.22 ± 10.807.17 (5.06, 9.61)93.38 (1.62, 95)Wilcoxon two-sample test0.2710.786
Dead11 (0)9.09 ± 6.417.61 (5.43, 8.66)23.3 (2.46, 25.76)
Differences (row 1-row 2)0.1395% CI (−4.54, 4.80)

LactateLive66 (34)1.89 ± 2.001.45 (1.20, 2.10)15.45 (0.5, 15.95)Wilcoxon two-sample test2.0050.045
Dead11 (0)2.06 ± 0.681.90 (1.60, 2.90)1.9 (1.1, 3)
Differences (row 1-row 2)−0.1795% CI (−0.82, 0.47)

PCTLive100 (0)3.08 ± 8.510.35 (0.05, 1.60)59.88 (0.01, 59.89)Wilcoxon two-sample test2.1920.028
Dead11 (0)4.29 ± 5.961.81 (0.32, 6.87)18.05 (0.18, 18.23)

NSTIs, necrotizing soft-tissue infections; SD, standard derivation; CRP, C-response protein; WBC, white blood cell; Hb, hemoglobin; HCT, hematocrit; BUN, blood urea nitrogen; Cr, creatinine; PCT, procalcitonin.