From: Risk factors of keloids in Syrians
Family history
Spontaneous
Sternum
Shoulder
Total
Yes
No
Positive
13
37
18
32
15
35
50
Negative
21
188
47
162
29
180
209
34
225
65
194
44
215
259
P value (chi-square test)
0.002
0.047
0.006