Here are the researched average ages for the onset of potty training in various countries:
0-12 months:
- Kenya (4-5 months)
- Vietnam (9 months)
- China, India, Russia (before age 1)
13-24 months:
- Palestine (14 to 15 months)
- Iran (12 to 24 months)
2 years or older:
- Germany, France, Japan, UK
