Table 1 Comparison of demographic variables and cleaning frequency between the groups
Variable | Allergic group | Non-allergic group | p-value |
|---|---|---|---|
N (%) | N (%) | Â | |
Sex | |||
 Male | 20 (80.0) | 12 (48.0) | 0.04 |
 Female | 5 (20.0) | 13 (52.0) |  |
Ethnicity | |||
 Chinese | 15 (60.0) | 12 (48.0) | 0.6 |
 Malay | 6 (24.0) | 9 (36.0) |  |
 Indian | 4 (16.0) | 4 (16.0) |  |
Vaginal delivery | 18 (72.0) | 16 (64.0) | 0.8 |
Cesarean delivery | 7 (28.0) | 9 (36.0) | Â |
Maternal education level | |||
 Less than 12 years | 8 (33.3) | 16 (64.0) | 0.046 |
 At least 12 years | 16 (66.7) | 9 (36.0) |  |
Family history of allergy | 15 (65.2) | 13 (65.0) | 0.1 |
No family history of allergy | 8 (34.8) | 7 (35.0) | Â |
Staying in same house since birth of child | 11 (44.0) | 10 (40.0) | 0.9 |
Moved house since birth of child | 14 (56.0) | 15 (60.0) | Â |
No pets at home | 21 (84.0) | 21 (84.0) | 0.9 |
Having pets at home | 4 (16.0) | 4 (16.0) | Â |
Number of days since last cleaning of homea | 1.8 ± 0.4 | 1.6 ± 0.3 | 0.6 |
Number of days since last cleaning of sofaa | 12.6 ± 3.2 | 33.8 ± 13.0 | 0.1 |
Number of days since last change of mattress covera | 9.3 ± 1.8 | 12.6 ± 18.5 | 0.4 |