Table 3: Accuracy of screening mammography date recall among female relatives from the Ontario site of the Breast Cancer Family Registry.

Screening mammography date recallInterview
Baseline Year 1Year 2

Total recall
 Self-reported month and year, (%)516 (73.8) 416 (88.7) 424 (93.0)
  Accurately recalled imaging date 319 (61.8) 328 (78.9) 341 (80.4)
  Overestimated imaging date 95 (18.4) 43 (10.3) 52 (12.3)
  Underestimated imaging date102 (19.8) 45 (10.8) 31 (7.3)
 Months difference (reported versus imaging), mean (SD)
  Overestimated imaging date 3.54 (5.4) 2.07 (2.1) 1.56 (1.6)
  Underestimated imaging date 5.48 (7.3)* 2.04 (1.9) 2.35 (2.5)

Partial recall
 Self-reported year only, (%) 136 (19.5) 28 (6.0) 25 (5.5)
  Accurately recalled imaging year 81 (59.6) 22 (78.6) 24 (96.0)
  Overestimated imaging year 24 (17.6) 2 (7.1) 1 (4.0)
  Underestimated imaging year 31 (22.8) 4 (14.3) 0 (0.0)
 Self-reported age only, (%) 33 (4.7) 24 (5.1) 5 (1.1)
  Accurately reported imaging age 20 (60.6) 20 (83.3) 2 (40.0)
  Overestimated imaging age 5 (15.2) 0 (0.0) 1 (20.0)
  Telescoped imaging age 8 (24.2) 4 (16.7) 2 (40.0)

No recall
 Could not recall year or age, (%) 14 (2.0) 1 (0.2) 2 (0.4)

P = 0.036 for women who underestimated versus overestimated the imaging mammogram date.