In a study of bladder cancer incidence among two large cities, one a coastal town and

In a study of bladder cancer incidence among two large cities, one a coastal town and one located 100 miles from the ocean. researchers conclude that close proximity to the ocean is associated with an increased risk of bladder cancer. further study of the issue reveals that many of the people who live in the coastal city migrated there when they retired, partially attracted to the lack of cigarette smoking bans in the seaside restaurants. the incorrect conclusion that exposure to the ocean increases risk for bladder cancer is known as: