I have a dataset with labels and usernames:
Labels Usernames
1 Londonderry
1 Londoncalling
1 Steveonder43
0 Maryclare_re
1 Patent107391
0 Anonymous
1 _24londonqr
...
It seems that the usernames containing the word London are very frequent in having assigned label=1. Do you have any idea on how I could proof it?