I suspect Americans travel approximately as many if not more floors in elevators than stairs, making a direct comparison more meaningful. Sure, you can slice it by trips or time, but stairs still kill a lot of people each year.
EX: NYC has 8.5 million people who probably average 50+ flights a day in elevators. People may travel up and down stairs more frequently, but few people are traveling anywhere near that far.
EX: NYC has 8.5 million people who probably average 50+ flights a day in elevators. People may travel up and down stairs more frequently, but few people are traveling anywhere near that far.