Table 1 Mammography utilization characteristics among Canadian women aged 40+ years, 1994–95 and 1996–97 NPHS longitudinal cohort (n = 3535)*
Characteristic | Frequency | Percent (95% CI)†|
|---|---|---|
Consistent Responders | 3325 | 94.5 (93.5–95.6) |
Ever had mammogram (1994–95) and (1996–97) | 2097 | 63.3 (61.0–65.6) |
Never had mammogram (1994–95) and (1996–97) | 987 | 24.3 (22.4–26.3) |
Never had mammogram (1994–95), Ever had (1996–97)‡ | 241 | 6.9 (5.7–8.1) |
Inconsistent Responders | 210 | 5.5 (4.4–6.5) |
Never had mammogram (1994–95), Ever had (1996–97)§ | 52 | 1.5 (1.0–2.0) |
Ever had mammogram (1994–95), Never had (1996–97) | 158 | 4.0 (3.1–4.9) |
   Time since last mammogram reported in 1994–95 |  |  |
   < 6 months | 32 | 20.3 (9.9–30.7) |
   ≥ 6 months and < 2 years | 55 | 44.1 (33.1–55.0) |
   ≥ 2 years | 71 | 35.6 (25.6–45.6) |
   Reason for mammogram: check up / no particular problem | 132 | 85.6 (78.2–93.1) |