Season School Children Pre-school Children χ2 P
Positive Strong positive Positive Strong positive
Spring 209 170(81.34) 235 191(81.28) 0 P>0.05
Summer 640 541(84.53) 393 320(81.42) 1.69 P>0.05
Autumn 102 84(82.35) 92 74(80.43) 0.18 P>0.05
Winter 208 182(87.50) 137 114(83.21) 1.25 P>0.05
Table 2: Comparison on Strong Positivity of Dust Mites in Seasons between Age Groups [cases, percentage (%)]
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