高層集合住宅における屋内性ダニ類の生息状況と居住環境要因の重回帰分析

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  • Multiple regression analysis of housing conditions associated with the prevalence of domestic mites in concrete-built apartments in Nagoya, Japan
  • コウソウ シュウゴウ ジュウタク ニ オケル オクナイセイ ダニルイ ノ セイ

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Surveys of domestic mites were carried out in livingrooms and bedrooms of 20 concrete-built apartments in and around Nagoya City, from September 1983 to June 1984 at about 3-month intervals. Multiple regression technique was applied to elucidate the influence of housing conditions on the prevalence of mites. Major housing conditions were selected by backward elimination method. The annual mean densities of Dermatophagoides pteronyssinus were positively correlated with family size and air-conditioning and inversely with age of house, floor level, and house-cleaning frequency. There was good agreement between the mite densities observed and estimated by the multiple regression equation. While similar factors were detected for the total number of mites and Cheyletidae, no significant factor was detected for D. farinae. Haplochthonius simplex had positive correlation with the number of rooms and air-conditioning, and negative correlation with age of house, floor level, and house-cleaning frequency. No positive factor was detected for Cosmochthonius reticulatus, which had negative correlation with floor level. Working housewife, air-conditioning and the number of rooms were positive factors for Tarsonemidae, Glycyphagidae and Acaridae, respectively, and age of house, cleaning frequency, and floor level were negative factors for most of the mites, although the extent of influence of these factors considerably varied by mite species. The number of mite species correlated positively with the number of rooms, air-conditioning, and flooring scores, and inversely with age of house, floor level, and house-cleaning frequency, whereas Simpson's indexes of diversity had positive correlation with air-conditioning, and negative correlation with the number of rooms and flooring scores. These results suggested that the difference in mite prevalence in homes is mostly due to the interrelationship between the biological characteristics of mites and degree of humidity in homes largely influenced by household activities, dwelling space and floor level, i.e., distance from the ground surface.

収録刊行物

  • 衛生動物

    衛生動物 46 (4), 367-380, 1995

    日本衛生動物学会

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