Table 3 Relationships observed between housing conditions and the prevalence of mites in dust samples from dwellings of the examined patients in Bytom (south Poland). Results of the Spearman’s rank correlation test analysis (*p < 0.05). Part I.

From: Abundance of domestic mites in dwellings of children and adolescents with asthma in relation to environmental factors and allergy symptoms

Number of mites (per 1 g of dust)

Dwelling conditions examined: R Spearman

Type of building

Type of heating

Age of building

Pets

Family size

Flat size

House wife

Dermatophagoides pteronyssinus

0.40*

0.31*

0.42*

0.23

 − 0.30*

 − 0.29*

 − 0.18

Dermatophagoides farinae

 − 0.38*

 − 0.13

 − 0.38*

0.01

0.16

 − 0.15

 − 0.12

Pyroglyphidae (total)

 − 0.04

0.10

0.01

0.07

 − 0.75

 − 0.37*

 − 0.23

Domestic mites (total)

 − 0.05

0.10

 − 0.004

0.28*

 − 0.10

 − 0.36*

 − 0.25

Total of mites

 − 0.05

0.10

 − 0.004

0.28*

 − 0.10

 − 0.36*

 − 0.25

Live Pyroglyphidae (total)

0.14

 − 0.04

0.21

0.18

 − 0.23

 − 0.06

0.01

Live domestic mites (total)

0.14

0.25

0.18

0.18

 − 0.24

 − 0.26*

 − 0.21

Live mites (total)

0.14

0.25

0.18

0.18

 − 0.24

 − 0.26*

 − 0.21

Live D. pteronyssinus

0.25

0.03

0.35*

0.26*

 − 0.39*

 − 0.13

 − 0.13

Live D. farinae

 − 0.11

 − 0.09

 − 0.13

 − 0.26*

0.17

0.09

0.21

  1. Type of building: block of houses [1], tenement-house [2], brick house (old) [3]; Type of heating: central [1], electric/gas/oil [2] or coal-stove [3]; Age of building: in years; Pets: no pets [0], fish/reptilians [1], birds [2], mammals (cats, dogs, hamsters, rabbits) [3]; Family size: number of inhabitants; Flat size: area occupied by each flat (surface in square meters); House wife: not employed [1], employed [2].