Table 2.
Odd ratio of for interaction of family history, smoking, allergens and frequency of GSTT1 and GSTM1 genotype among allergic asthma patients.
| Variables | Odd Ratio | Confidence Interval (95%) | z- statistic | P-value | χ2 Test P-value |
|---|---|---|---|---|---|
| Family History | – | – | – | – | 0.000 |
| Smoking | 0.7445 | 0.4074 to 1.3604 | 0.959 | 0.3374 | 0.006 |
| Allergens | – | – | – | – | 0.000 |
| T+/+ and M+/+ | 0.8276 | 0.5732 to 1.1949 | 1.010 | 0.3126 | 0.018 |
| T−/− and M+/+ | 1.3681 | 0.8519 to 2.1971 | 1.297 | 0.1947 | 0.001 |
| T+/+ and M−/− | 0.7770 | 0.5246 to 1.1507 | 1.259 | 0.2079 | 0.012 |
| T−/− and M−/− | 1.6521 | 0.9399 to 2.9039 | 1.745 | 0.0810 | 0.200 |