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Table 8

Effect of installation of insect screens in windows on the users' perception of odour

User groupNComposite odour perception
Z-scorea (p-value)
Mean (SD)Mean rank
Windows without screens 57 1.967 (0.6149) 101.83 − 0.415 (0.678) 
Windows with screens 153 2.017 (0.6116) 106.11 
Total 210 2.010 (0.6108)  
User groupNComposite odour perception
Z-scorea (p-value)
Mean (SD)Mean rank
Windows without screens 57 1.967 (0.6149) 101.83 − 0.415 (0.678) 
Windows with screens 153 2.017 (0.6116) 106.11 
Total 210 2.010 (0.6108)  

aBased on the Wilcoxon signed-rank test.

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