Table 2: Factors regarding to the severity of asthma, rhinitis, and eczema symptoms from written questionnaires of the ISAAC project in 11- to 14-Year-Old children reporting symptoms in Al Maasara and Al Maadi in 2014.
| Factor | Asthma symptoms | Chi square |
| Present | Absent | X2 | P value |
| Gender |
| -Male | 69(48.6%) | 80(48.2%) | 0.002 | 0.964 |
| -Female | 73(51.4%) | 86(51.8%) | | |
| Mother’s education |
| -Educated | 78(79.6%) | 113(90.4%) | 4.379 | 0.036 |
| -Non educated | 20(20.4%) | 12(9.6%) | | |
| Father’s education |
| -Educated | 81(87.1%) | 111(95.7%) | 4.015 | 0.045 |
| -Non educated | 12(12.9%) | 5(4.3%) | | |
| Family history | 68(47.9%) | 33(19.9%) | 25.984 | <0.001 |
| Allergy |
| -Skin allergy | 53(37.3%) | 22(13.3%) | 0.004 | 0.953 |
| -Food allergy | 49(34.5%) | 13(7.8%) | 3.913 | 0.048 |
| -Nasal allergy | 29(20.4%) | 8(4.8%) | 1.427 | 0.232 |
| Environmental exposure |
| -Nearby factories | 37(26.1%) | 20(12%) | 9.958 | 0.002 |
| -Nearby coffee shops | 93(65.5%) | 83(50%) | 7.501 | 0.006 |
| -Nearby trucks | 137(96.5%) | 154(92.8%) | 2.018 | 0.155 |
| -Pet exposure | 89(62.7%) | 68(41%) | 14.437 | <0.001 |
| -Passive smoking | 75(52.8%) | 67(47.2%) | 0.989 | 0.320 |