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Table 2 Degree of general potentially pathogenic contamination

From: UniStatus - a cross-sectional study on the contamination of uniforms in the Danish ambulance service

CFU per 25 cm2 Group A Group B p-value*
n 45 45  
Mean 82.49 55.29 0.06
Before washing
SD 65.21 64.30  
Minimum 0.00 0.00  
Maximum 200.00 200.00  
CI 95% 19.59 19.32  
After washing
Mean 3.09 1.47 0.02
SD 5.04 4.77  
Minimum 0.00 0.00  
Maximum 29.00 30.00  
CI 95% 1.52 1.43  
  1. *Student’s t-test.