Figure 1From: Association of House Dust Allergen Concentrations With Residential Conditions in City and in Rural HousesThe table presents the factor loadings, which characterizes association of allergen concentrations with the first component. PC I, first principal component; PC II, second principal component. The figure beside shows comparison of the first component between urban and rural houses. Student t test was used for comparison; ranges indicate 95% confidence intervals.Back to article page