PS_7A/B. How long has it been since you had your last sigmoidoscopy/colonoscopy?
The category answer ranges are more specific than 2010. The universe for this variable includes all adult respondents between ages 50 and 75 who have had a sigmoidoscopy or colonoscopy.
| Values | Categories | N | NW | |||
| 1 | A year ago or less | 459 | 204,196.4 |
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| 2 | Between 1 and 5 years ago | 750 | 305,647.7 |
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| 3 | Between 5 and 10 years ago | 274 | 109,497.3 |
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| 4 | More than 10 years ago | 75 | 29,185.6 |
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| -8 | Not in universe | 5652 | 3,947,514.2 |
| Valid cases | 1558 | 648527.096 |
| Missing cases | 5652 | 3947514.223 |
| Standard deviation | 0.814 | 0.813 |
| This variable is numeric |
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