Table 2.

Time since last mammogram and number of mammograms reported by individual women in the Age Trial control arm

Time since most recent mammogram due to breast problems (y)No.* (%)Range at centers (%)
(A) Mammography due to breast problems
    ≤181 (4.0)0.4-6.0
    1.1-399 (4.8)3.2-7.8
    >3170 (8.3)3.6-14.8
    Missing data22 (1.1)0-1.9
    Total372 (18.2)10.6-26.7
Number of mammograms due to breast problems
    1237 (11.6)7.7-16.2
    274 (3.6)1.8-5.2
    332 (1.6)0.5-2.9
    ≥427 (1.3)0.5-2.4
    Missing data2 (0.1)0-0.4
    Total372 (18.2)10.6-26.7
(B) Unscheduled mammography
Time since most recent unscheduled mammogram (y)
    ≤136 (1.8)0.4-2.9
    1.1-343 (2.1)0.4-3.6
    >365 (3.2)2.1-4.8
    Missing data28 (1.4)0-3.9
    Total172 (8.4)6.7-11.4
Number of unscheduled mammograms
    1111 (5.4)3.4-8.3
    231 (1.5)0.8-2.4
    317 (0.8)0.4-1.6
    ≥411 (0.5)0.2-1.2
    Missing data2 (0.1)0-0.4
    Total172 (8.4)6.7-11.4

NOTE: Results from all usable questionnaires (n = 2,044).

  • *These numbers include a total of 35 women who were screened for both breast problems and for unscheduled mammography.