Skip to main content

Table 3 Clinical features of all patients classified by patient groups

From: Factors associated with chemical burns in Zhejiang province, China: An epidemiological study

Variable a All (N = 492) Group 1b (N = 263) Group 2 b (N = 229) P-value
Cause of chemical burns     < 0.001*
   Facility problem 88(17.89%) 74(28.14%) 14(6.11%)  
   Inappropriate operation/handling 351(71.34%) 161(61.22%) 190(82.97%)  
   Other 53(10.77%) 28(10.64%) 25(10.92%)  
First aid treatment     < 0.001*
   Without any treatment 241(48.98%) 13(4.94%) 228(99.56%)  
   Flush with running water 231(46.95%) 230(87.45%) 1(0.44%)  
   Using counteractive agent 17(3.46%) 17(6.47%) 0(0%)  
   Other 3(0.61%) 3(1.14%) 0(0%)  
Total body surface area burned (%) 4(1.5,8) 5(3,10) 2(1,7) < 0.001*
Inhalation     0.007*
   No 450(91.65%) 230(87.78%) 220(96.07%)  
   Slight 22(4.48%) 18(6.87%) 4(1.75%)  
   Moderate 14(2.85%) 10(3.82%) 4(1.75%)  
   Severe 5(1.02%) 4(1.53%) 1(0.43%)  
Chemical poisoning     0.032*
   No 482(97.97%) 254(96.58%) 228(99.56%)  
   Slight 4(0.81%) 4(1.52%) 0(0%)  
   Moderate 4(0.81%) 4(1.52%) 0(0%)  
   Severe 2(0.41%) 1(0.38%) 1(0.44%)  
Pre-job training     < 0.001*
   Yes 137(31.64%) 115(49.78%) 22(10.89%)  
   No 296(68.36%) 116(50.22%) 180(89.11%)  
Prognoses     0.078
   Cured 401(81.51%) 207(78.71%) 194(84.72%)  
   Improvement 84(17.07%) 54(20.53%) 30(13.10%)  
   Hospital transfer 3(0.61%) 1(0.38%) 2(0.87%)  
   Discharged against advice 1(0.20%) 0(0%) 1(0.44%)  
   Death 3(0.61%) 1(0.38%) 2(0.87%)  
  1. a Burned area was presented as median (IQR) and compared by Mann-Whitney U test; categorical variables were presented as count (percentage) and tested by Fisher's exact test
  2. b Patients were classified into two groups according to awareness of correct immediate onsite treatment required (Group 1) or lack of awareness of immediate treatment required (Group 2)
  3. *P < 0.05 indicated significant differences between groups
  4. Fifty nine patients who were not injured at work were excluded from this analysis.