Well, it does say "By some estimates, as many as one in 100 people have", which sounds like it means, "by the highest estimate anyone has made", or "range with

Well, it does say "By some estimates, as many as one in 100 people have", which sounds like it means, "by the highest estimate anyone has made", or "range with highest maximum anyone has estimated". Usually a more average number is used, than an extreme, when an actual value is unknown.