Biomedical Science Letters

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Table. 2.

Household PM2.5 concentration according to key factors

Variable Household
PM2.5 (μg/m3)
P-value
Age 0.326
3rd tertile 16.2 ± 1.0
2nd tertile 16.1 ± 0.8
1st tertile 18.9 ± 1.8
Sex 0.004*
Female 15.9 ± 0.7
Male 18.2 ± 1.0
Education level 0.176
College or higher 15.7 ± 1.9
High school 17.8 ± 1.6
Middle school 17.6 ± 1.0
Elementary school or lower 19.2 ± 1.0
Current smoking status 0.012*
Current 21.3 ± 2.0
Non-current 16.1 ± 0.7
Atmospheric PM2.5 <0.001**
3rd tertile 22.5 ± 1.6
2nd tertile 15.1 ± 0.7
1st tertile 12.5 ± 1.1
Floor level 0.136
3rd tertile 14.9 ± 1.2
2nd tertile 17.9 ± 1.2
1st tertile 18.0 ± 1.3
Residential floor area <0.001**
3rd tertile 13.6 ± 0.8
2nd tertile 15.2 ± 0.6
1st tertile 21.4 ± 1.6
Recent home repair 0.599
Yes 18.2 ± 2.5
No 16.9 ± 0.8
Presence of pet 0.816
Yes 17.4 ± 17.8
No 16.9 ± 0.8
House cleaning 0.455
Yes 17.0 ± 0.7
No 15.1 ± 2.4
Use of insecticide 0.381
Yes 17.7 ± 1.0
No 16.4 ± 1.1
Use of air freshener 0.600
Yes 16.6 ± 0.8
No 17.3 ± 1.1
Use of air purifier 0.268
Yes 16.1 ± 1.2
No 17.7 ± 0.9
Use of humidifier 0.184
Yes 19.0 ± 1.9
No 16.3 ± 0.7
Cooking activity status 0.030*
Yes 17.0 ± 0.8
No 11.3 ± 2.5
Living room-kitchen separation 0.335
Yes 19.7 ± 3.2
No 16.6 ± 0.7
Window opening or closing status 0.510
Yes 16.5 ± 0.8
No 17.4 ± 1.2
Residential zoning area 0.043*
Residential zone 17.2 ± 0.8
Urban in non-residential zone 16.7 ± 1.6
Rural in non-residential zone 13.7 ± 1.2

Values are presented as mean ± standard deviation.

PM2.5, particulate matter 2.5.

*P < 0.05, **P < 0.001.

Biomed Sci Letters 2024;30:264-75 https://doi.org/10.15616/BSL.2024.30.4.264
© 2024 Biomed Sci Letters