Table 2.
Average Breast Cancer Surveillance Consortium risk scores by year and age group*
| Year | Aged 40 to 74 y | Aged 40 to 49 y | Aged 50 to 74 y | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Eligible population in Vermont | Women screened in Vermont | Age-adjusted screening utilization % (95% CI) | Average BCSC risk score (95% CI) | Eligible population in Vermont | Women screened in Vermont | Age-adjusted screening utilization % (95% CI) | Average BCSC risk score (95% CI) | Eligible population in Vermont | Women screened in Vermont | Age-adjusted screening utilization % (95% CI) | Average BCSC risk score (95% CI) | |
| 2001 | 113892 | 43512 | 38.7 (38.4 to 39.3) | 1.56 (1.55 to 1.57) | 47405 | 15922 | 33.6 (33.2 to 34.0) | 0.90 (0.89 to 0.91) | 66487 | 27590 | 41.6 (41.2 to 42.5) | 1.94 (1.93 to 1.95) |
| 2002 | 116159 | 44015 | 38.3 (38.0 to 38.6) | 1.59 (1.58 to 1.60) | 47521 | 15956 | 33.6 (33.1 to 34.0) | 0.92 (0.91 to 0.93) | 68638 | 28059 | 40.9 (40.6 to 41.3) | 1.97 (1.95 to 1.98) |
| 2003 | 118658 | 45087 | 38.3 (38.0 to 38.6) | 1.61 (1.60 to 1.62) | 47657 | 16112 | 33.8 (33.4 to 34.2) | 0.93 (0.92 to 0.94) | 71001 | 28975 | 40.9 (40.5 to 41.2) | 2.00 (1.98 to 2.01) |
| 2004 | 120821 | 46821 | 39.0 (38.7 to 39.3) | 1.60 (1.59 to 1.61) | 47476 | 16273 | 34.3 (33.8 to 34.7) | 0.92 (0.91 to 0.92) | 73345 | 30548 | 41.7 (41.3 to 42.3) | 1.96 (1.95 to 1.97) |
| 2005 | 122487 | 46092 | 37.8 (37.5 to 38.1) | 1.51 (1.50 to 1.52) | 46936 | 15690 | 33.4 (33.0 to 33.9) | 0.87 (0.86 to 0.88) | 75551 | 30402 | 40.3 (39.9 to 44.6) | 1.84 (1.82 to 1.85) |
| 2006 | 124117 | 49794 | 40.2 (39.9 to 43.5) | 1.47 (1.46 to 1.48) | 46338 | 16868 | 36.4 (36.0 to 36.8) | 0.84 (0.84 to 0.85) | 77779 | 32926 | 42.4 (42.0 to 42.7) | 1.79 (1.78 to 1.80) |
| 2007 | 125536 | 50696 | 40.4 (40.1 to 40.7) | 1.47 (1.46 to 1.48) | 45149 | 16231 | 35.9 (35.5 to 36.4) | 0.84 (0.83 to 0.85) | 80387 | 34465 | 42.9 (42.5 to 43.2) | 1.76 (1.75 to 1.77) |
| 2008 | 127132 | 54109 | 42.5 (42.2 to 42.7) | 1.44 (1.44 to 1.45) | 44090 | 16961 | 38.5 (38.0 to 38.9) | 0.82 (0.81 to 0.83) | 83042 | 37148 | 44.7 (44.4 to 45.1) | 1.73 (1.72 to 1.74) |
| 2009 | 128582 | 54415 | 42.1 (41.9 to 42.4) | 1.48 (1.47 to 1.49) | 43055 | 16438 | 38.2 (37.7 to 38.6) | 0.82 (0.81 to 0.83) | 85527 | 37977 | 44.4 (44.0 to 44.7) | 1.77 (1.76 to 1.78) |
| 2010 | 130055 | 51882 | 39.6 (39.3 to 39.8) | 1.51 (1.50 to 1.52) | 42252 | 14604 | 34.6 (34.1 to 35.0) | 0.83 (0.82 to 0.84) | 87803 | 37278 | 42.4 (42.0 to 42.7) | 1.77 (1.76 to 1.78) |
| 2011 | 131258 | 51848 | 39.1 (38.8 to 39.3) | 1.54 (1.53 to 1.55) | 41067 | 14027 | 34.2 (33.7 to 34.6) | 0.83 (0.82 to 0.84) | 90191 | 37821 | 41.8 (41.5 to 42.2) | 1.81 (1.80 to 1.82) |
| 2012 | 131878 | 50158 | 37.5 (37.3 to 37.8) | 1.58 (1.57 to 1.59) | 39678 | 13101 | 33.0 (32.5 to 33.5) | 0.84 (0.83 to 0.85) | 92200 | 37057 | 40.1 (39.7 to 45.4) | 1.84 (1.83 to 1.85) |
* Table reflects counts of women screened in Vermont who fit our study inclusion criteria (aged 40–74 years; no history of breast augmentation; non-Native American race/ethnicity; and those who did not screen at one excluded imaging facility) and women who did not opt out of research. Eligible population by age group is based on US intercensal and postcensal estimates provided by the US Census (41). BCSC = Breast Cancer Surveillance Consortium; CI = confidence interval.