Non-steroidal anti-inflammatory drugs and statins in relation to colorectal cancer risk

Table 1 Characteristics of women with colorectal cancer and controls n (%)

Characteristic	Cases (n = 657)	Controls (n = 1342)1
Education
No high school diploma	95 (14.8)	119 (11.8)
High school diploma	312 (48.7)	632 (50.0)
Some college	143 (22.3)	312 (20.7)
College degree	91 (14.2)	257 (17.6)
Type of postmenopausal hormone therapy
Never	417 (65.2)	696 (55.7)
Estrogen only	73 (11.4)	145 (10.9)
Estrogen and progestin only	41 (6.4)	133 (7.2)
Other combination	109 (17.0)	344 (26.2)
Family history of colorectal cancer
No	492 (80.9)	1060 (87.2)
Yes	116 (19.1)	171 (12.8)
Body mass index (kg/m2)
< 25	273 (42.7)	538 (40.9)
25-30	206 (32.2)	465 (36.9)
≥ 30	160 (25.0)	314 (22.1)
History of colorectal cancer endoscopic screening (colonoscopy/sigmoidoscopy)
No	429 (67.3)	816 (61.5)
Yes	208 (32.6)	455 (38.5)
Smoking history (pack-years)
Never	311 (48.7)	677 (54.7)
< 10	101 (15.8)	208 (15.1)
10-20	53 (8.3)	127 (7.4)
≥ 20	174 (27.2)	305 (22.9)

¹Control percentages were age-adjusted to the cases age distribution. In this table, percentages are based on excluding unknowns in that category.