Table 2.

Mammography: Chart Reviewed and Percent of Meeting Criterion by Center by Time

TimeNonincentivized GroupIncentivized GroupP*
Total Charts Reviewed (n)Charts Meeting Criterion (n [%])Total Charts Reviewed (n)Charts Meeting Criterion (n [%])
2003
    1st quarter571518 (90.72)651603 (92.63).366
    2nd quarter134121 (90.30)535479 (89.53).545
    3rd quarter392359 (91.58)638579 (90.75).588
    4th quarter615575 (93.50)669609 (91.03).227
2004
    1st quarter242222 (91.74)268253 (94.40).985
    2nd quarter223211 (94.62)298281 (94.30).796
    3rd quarter224210 (93.75)301281 (93.36).668
    4th quarter114109 (95.61)153144 (94.12).494
2005
    1st quarter267256 (95.88)370359 (97.03).552
    2nd quarter339300 (88.50)421405 (96.20).002
    3rd quarter338300 (88.76)429418 (97.44).011
    4th quarter299272 (90.97)369363 (98.37).0008
2006
    1st quarter314281 (89.49)404398 (98.51)<.0001
    2nd quarter350324 (92.57)414401 (96.86).048
    3rd quarter344313 (90.99)422410 (97.16).026
    4th quarter288258 (89.58)192184 (95.83).196
2007
    1st quarter272251 (92.28)363343 (94.49).463
    2nd quarter350326 (93.14)448428 (95.54).260
    3rd quarter350339 (96.86)420403 (95.95).600
    4th quarter250240 (96.00)279273 (97.85).288

  • No difference was found between nonincentivized and incentivized before 2nd quarter 2005, whereas incentivized had a higher percent of meeting mammography criterion from 2nd quarter 2005 to 3rd quarter 2006 (P < .05 for all); no difference was found in 2007.

  • * Within-clinic clustering adjusted.