Table 1: Characteristics of the Kentucky colon cancer genetic epidemiology study postmenopausal females.

CharacteristicCases ( 𝑁 = 5 1 6 )Controls ( 𝑁 = 9 4 1 ) 𝑃 valuea

Age (years)63.8 (8.9)b63.4 (9.4)b0.38
Race
 Caucasian483 (93.6%)878 (93.3%)0.43
 African American24 (4.7%)54 (5.7%)
 Other8 (1.6%)7 (0.7%)
 Unknown1 (0.2%)2 (0.2%)
Education
 <8 years16 (3.1%)8 (0.9%)<0.001
 8–11 years62 (12.0%)78 (8.3%)
 High school
 (HS) diploma
165 (32.0%)260 (27.6%)
 Some post-HS training165 (32.0%)318 (33.8%)
 Bachelor’s degree43 (8.3%)114 (12.1%)
 Graduate degree65 (12.6%)163 (17.3%)
Income
 <$15,00089 (17.2%)118 (12.5%)<0.001
 $15,000–$29,000122 (23.6%)174 (18.5%)
 $30,000–$44,00093 (18.0%)182 (19.3%)
 $45,000–$69,00096 (18.6%)164 (17.4%)
 ≥$70,00083 (16.1%)229 (24.3%)
 Refused33 (6.4%)74 (7.8%)
Cigarette smoker
 Ever244 (47.2%)460 (48.9%)0.04
 Never262 (50.8%)476 (50.6%)
 Unknown10 (1.9%)5 (0.5%)
Alcohol drinker
 Yes147 (28.5%)353 (37.5%)<0.001
 No354 (68.6%)550 (58.4%)
 Unknown15 (2.9%)38 (4.0%)
Family history of colorectal cancer
 Yes192 (37.2%)276 (29.3%)0.004
 No295 (57.2%)588 (62.5%)
 Unknown29 (5.6%)77 (8.2%)
NSAIDs use
 Yes189 (36.6%)420 (44.6%)0.003
 No327 (63.4%)521 (55.4%)
HRT
 Yes222 (43.0%)573 (60.9%)<0.001
 No290 (56.2%)356 (37.8%)
 Unknown4 (0.8%)12 (1.3%)
Physical activity
20s  Light intensityc76 (14.7%)133 (14.1%)0.80
   Moderate intensityc391 (75.8%)709 (75.3%)
   Vigorous intensityc49 (9.5%)99 (10.5%)
30s  Light intensityc72 (14.0%)120 (12.8%)0.20
   Moderate intensityc411 (79.7%)737 (78.3%)
   Vigorous intensityc33 (6.4%)84 (8.9%)
50s  Light intensityc96 (18.6%)208 (22.1%)0.19
   Moderate intensityc398 (77.1%)685 (72.8%)
   Vigorous intensityc22 (4.3%)48 (5.1%)

a 𝑃 value for 𝑡 -test or 𝜒 2 -test with 𝑘 (number of groups)—1 degrees of freedom. bMean and SD of the mean in parentheses. cLight intensity: 1 to <3.0 metabolic equivalents (METs); moderate intensity: ≥3.0 to ≤6.0 METs; vigorous intensity: >6.0 METs.