| Histroy |
Studied Groups |
Fisher’s Exact test |
P value |
| Cases (n=50) |
Control (n=20) |
| NO. |
% |
NO. |
% |
| Family history: |
9.33 |
<0.01 |
| Present |
20 |
40 |
0 |
0 |
| Absent |
30 |
60 |
20 |
100 |
| Breast feeding : |
0.05* |
>0.05 |
| Yes |
26 |
52 |
11 |
55 |
| No |
24 |
48 |
9 |
45 |
| Immediate symptoms: |
12.56 |
<0.001 |
| Present |
24 |
48 |
0 |
0 |
| Absent |
26 |
52 |
20 |
100 |
| Respiratory symptoms: |
7.9 |
<0.01 |
| Present |
18 |
36 |
0 |
0 |
| Absent |
32 |
64 |
20 |
100 |
| Skin symptoms: |
15.38 |
<0.001 |
| Present |
27 |
54 |
0 |
0 |
| Absent |
23 |
46 |
20 |
100 |
* χ2 test |