Table 3.

Comparison of ACP subset to non-ACP participants and total SELECT sample

ACP participants (n = 8,094)Non-ACP participants (n = 26,793)All of SELECT (n = 34,887)
Age, y
 Median (IQR)62.0 (58.0–67.0)62.0 (58.0–68.0)62.0 (58.0–67.0)
 50–54284 (3.5)1,199 (4.5)1,483 (4.3)
 55–644,937 (61.0)15,408 (57.5)20,345 (58.3)
 65–742,563 (31.7)8,244 (30.8)10,807 (31.0)
 ≥75310 (3.8)1,942 (7.3)2,252 (6.5)
Race/ethnicity
 White6,883 (85.0)20,688 (77.2)27,571 (79.0)
 African American935 (11.6)3,383 (12.6)4,318 (12.4)
 Hispanic, not African American150 (1.9)1,790 (6.7)1,940 (5.6)
 Hispanic, African American6 (0.1)355 (1.3)361 (1.0)
 Aboriginal24 (0.3)95 (0.4)119 (0.3)
 Asian/Pacific Islander72 (0.9)400 (1.5)472 (1.4)
 Other24 (0.3)82 (0.3)106 (0.3)
Education
 ≤High school/GED1,267 (15.7)6,415 (24.2)7,682 (22.2)
 Some college/vocational2,048 (25.4)7,307 (27.6)9,355 (27.1)
 ≥College graduate4,740 (58.9)12,775 (48.2)17,515 (50.7)
 Missing39296335
Smoking status
 Never3,646 (45.1)11,235 (41.9)14,882 (42.7)
 Current481 (6.0)2,201 (8.2)2,682 (7.7)
 Former3,957 (48.9)13,200 (49.3)17,156 (49.2)
 Missing10157167
BMI, kg/m2
 Median (IQR)27.8 (25.5–30.9)28.0 (25.5–31.0)28.0 (25.5–31.0)
 Normal or underweight (≤25)1,630 (20.1)5,413 (20.3)7,043 (20.3)
 Overweight (>25–30)3,930 (48.7)12,726 (47.8)16,656 (48.0)
 Obese (>30)2,505 (30.9)8,497 (31.9)11,002 (31.7)
 Missing29157186
Personal history of
 Cancer170 (2.1)576 (2.2)746 (2.1)
 CRC33 (0.4)110 (0.4)143 (0.4)
 Colon polyps1,646 (20.3)3,639 (13.6)5,285 (15.2)
 Diverticulitis547 (6.8)1,365 (5.1)1,912 (5.5)
 Diabetes680 (8.4)2,945 (11.0)3,625 (10.4)
Number of FDRs with CRC
 06,685 (86.7)22,390 (88.9)29,075 (88.4)
 1907 (11.8)2,525 (10.0)3,432 (10.4)
 2 or more116 (1.5)286 (1.1)402 (1.2)
 Missing3861,5921,978
Medication use
 Aspirin3,731 (46.1)10,288 (38.4)14,019 (40.2)
  Missing01212
 Cox II inhibitors424 (5.2)1,414 (5.3)1,838 (5.3)
  Missing103646
 Other NSAIDs868 (10.7)2,308 (8.6)3,176 (9.1)
  Missing53641
 Statins1,463 (28.6)4,439 (25.2)5,902 (26.0)
  Not asked/missing2,9759,16512,140
  • Abbreviations: CRC, colorectal cancer; GED, General Educational Development Test; IQR, interquartile range; NSAIDS, nonsteroidal anti-inflammatory drugs.