An interpolated map of the U.S. showing a range betweenhigh (38%) and low (23%) responses to 'At what age are people supposed to start having sigmoidoscopy or colonoscopy exams?' (HINTS 2003 CC-24 Responded '50'). High values are found in most of the northeast and parts of the northern midwest. Middle values are found in the midwest, west and southeast. Lowest values are found in Florida, Louisiana and Texas.