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—Incident Colon Cancer Counts by Geographic Level: Massachusetts, 1987–1993
| Geocoded to | ||||
| Zip Code | ||||
| No. of Cases of Colon Cancer | Block Group No. (%) | Census Tract, No. (%) | Total, No. (%) | Zip Code Changed or Established After the 1990 Census, No. (%) |
| 17 266 | 15 792 (91.5) | 17 265 (100.0) | 17 266 (100.0) | 1784 (10.3) |
