1% does seem awfully low. And I am not having a go at them here.
Thailand has a very high suicide rate and a very high murder rate per capita.

The face thing and the Jai Yen thing tend to make Thais brood when they have a problem. Then you have poverty and a relative lack of access to medical care.
Most of the poor people diagnose themselves and then prescribe their own medications available from the corner Pharmacy. I remember the wife when I first met her coming out of the Pharmacy with a little plastic bag containing about 12 pills of different colour and size. She told me, --"this one is to help me go to sleep, and this one is to help me wake up, and this one is to make me feel good. WTF?