Table 1 Participants’ characteristics
Number | % | Number | % | ||||
|---|---|---|---|---|---|---|---|
Sex | Having a child | ||||||
Male | 750 | 50.0 | Yes | 876 | 58.4 | ||
Female | 750 | 50.0 | Family medical history | ||||
Age (years) | SBS | 3 | 0.2 | ||||
20–29 | 68 | 4.5 | MCS | 1 | 0.1 | ||
30–39 | 266 | 17.7 | Asthma | 95 | 7.7 | ||
40–49 | 533 | 35.5 | Atopic dermatitis | 122 | 9.8 | ||
50–59 | 496 | 33.1 | Rash | 21 | 1.7 | ||
60–69 | 137 | 9.1 | Hay fever | 335 | 27.0 | ||
Education | Allergic rhinitis | 186 | 15.0 | ||||
< 6 years | 6 | 0.4 | Allergic conjunctivitis | 34 | 2.7 | ||
6–9 years | 69 | 4.6 | Food allergy | 40 | 3.2 | ||
10–12 years | 454 | 30.3 | Urticaria | 74 | 6.0 | ||
≥ 13 years | 966 | 64.4 | Mental illnesses | 34 | 2.7 | ||
Other | 5 | 0.3 | Sensitivity of family to air quality and odor | ||||
Family income (yen) | Yes | 373 | 24.9 | ||||
< 3 million | 329 | 21.9 | Family smoking | ||||
3–< 6 million | 534 | 35.6 | Yes | 654 | 43.6 | ||
6–< 9 million | 346 | 23.1 | Duration of residence | ||||
9–< 15 million | 231 | 15.4 | < 5 years | 268 | 17.9 | ||
≥ 15 million | 60 | 4.0 | 5–< 10 years | 283 | 18.9 | ||
Medical history | 10–< 20 years | 461 | 30.7 | ||||
SBS | 1 | 0.1 | ≥ 20 years | 488 | 32.5 | ||
MCS | 6 | 0.4 | Age of house building | ||||
Asthma | 134 | 8.9 | <5 years | 103 | 6.9 | ||
Atopic dermatitis | 130 | 8.7 | 5–< 10 years | 158 | 10.5 | ||
Rash | 56 | 3.7 | 10–< 20 years | 423 | 28.2 | ||
Hay fever | 386 | 25.7 | ≥ 20 years | 816 | 54.4 | ||
Allergic rhinitis | 244 | 16.3 | House construction | ||||
Allergic conjunctivitis | 65 | 4.3 | Wooden | 729 | 48.6 | ||
Food allergy | 47 | 3.1 | Material window flame (bedroom) | ||||
Urticaria | 154 | 10.3 | Old wooden sash | 28 | 1.9 | ||
Mental illnesses | 76 | 5.1 | Aluminum sash | 853 | 56.9 | ||
Smoking | Double aluminum sash | 260 | 17.3 | ||||
Never | 794 | 52.9 | Insulation sash | 144 | 9.6 | ||
Quit | 340 | 22.7 | Others | 215 | 14.3 | ||
Current | 366 | 24.4 | Insulating glass pane type (bedroom) | ||||
Exposure to tobacco | Single | 884 | 58.9 | ||||
Never | 150 | 10.0 | Double | 427 | 28.5 | ||
Rare | 236 | 15.7 | Triple | 11 | 0.7 | ||
Sometimes | 567 | 37.8 | Others | 178 | 11.9 | ||
Often | 547 | 36.5 | Presence of condensation | ||||
Living experience in a renovated house/new house | Yes | 1020 | 68.0 | ||||
Yes | 1004 | 66.9 | Moisture and musty odor | ||||
Headache, heaviness in head, tinnitus | Yes | 786 | 52.4 | ||||
Never | 1185 | 79.0 | Using deodorant and fragrance | ||||
Rare | 193 | 12.9 | No | 392 | 26.1 | ||
Sometimes | 78 | 5.2 | Rare | 344 | 22.9 | ||
Often | 24 | 1.6 | Sometimes | 439 | 29.3 | ||
Always | 20 | 1.3 | Often | 196 | 13.1 | ||
Itching, burning, irritation, drying of the eyes | Every day | 129 | 8.6 | ||||
Never | 1189 | 79.3 | Pet | ||||
Rare | 201 | 13.4 | Yes | 429 | 28.6 | ||
Sometimes | 82 | 5.5 | Ventilation | ||||
Often | 13 | 0.9 | Less than once/day | 391 | 26.1 | ||
Always | 15 | 1.0 | More than once/day | 1109 | 73.9 | ||
Irritated, stuffy, or runny nose and irritated or dry throat | Frequency of cleaning | ||||||
Never | 1023 | 68.2 | Less than once/week | 337 | 22.5 | ||
Rare | 279 | 18.6 | More than once/week | 1163 | 77.5 | ||
Sometimes | 145 | 9.7 | Residential area | ||||
Often | 38 | 2.5 | Hokkaido | 59 | 3.9 | ||
Always | 15 | 1.0 | Tohoku | 74 | 4.9 | ||
Cough and sneezes | Kanto | 595 | 39.7 | ||||
Never | 994 | 66.3 | Chubu | 236 | 15.7 | ||
Rare | 311 | 20.7 | Kansai | 329 | 21.9 | ||
Sometimes | 152 | 10.1 | Chugoku | 80 | 5.3 | ||
Often | 30 | 2.0 | Shikoku | 42 | 2.8 | ||
Always | 13 | 0.9 | Kyushu, Okinawa | 85 | 5.7 | ||
Number of family members | Interest in air quality and odor | ||||||
1 | 261 | 17.4 | Yes | 958 | 63.9 | ||
2 | 422 | 28.1 | Knowledge regarding SBS | ||||
3 | 388 | 25.9 | No | 128 | 8.5 | ||
4 | 302 | 20.1 | Have heard | 778 | 51.9 | ||
≥ 5 | 127 | 8.5 | Aware | 464 | 30.9 | ||
Deep knowledge | 130 | 8.7 | |||||